Breakthrough with the Forbidden Master


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“Compared to our time, the current generation just aren’t as reliable” they said, “Still, isn’t he the son of the Hero?” How annoying.

It’s been over ten years since the battle between mankind and the demons ended. The children of the heroes who saved the world are all grown up.

One of them, Earth, was a talented man, and everyone expected him to succeed his father as a warrior and defend his country, but Earth was always wary of his father’s title.

One day, Earth is shocked to find his father’s sword, which was used to overthrow the Demon King, sealed in his family’s mansion.

Because trapped within was the ghost of the Great Demon King who was unable to pass on and continued to roam the world.

For some reason, only he could see the spirit of the Demon King, and the Demon King possessed him through the sword.

Every day, forced to coexist with the spirit of the Demon King, they live a strange shared life, when the Demon King whispers to Earth on a whim.

“I have a grudge against your father. If you want to get back at your father and the world, I’ll train you. I’m free.”

Earth receives special personal guidance from the Demon King just to get back at his parents and the world.

Then, in the coming days. The hero’s parents, the heroes of the past, the first love, the princess childhood friend, the geniuses of the era, and the world will tremble.

Associated Names
One entry per line
Breakthrough with the Forbidden Master – So what if the Hero’s son is the Demon King’s disciple~
Kindan Shitei de Breakthrough ~ Yuusha no Musuko ga Maou no Deshi de Nani ga Warui ~
Related Series
Ankoku Kishi Monogatari ~Yuusha wo Taosu Tameni Maou ni Shoukansaremashita~ (1)
I’m the Evil Lord of an Intergalactic Empire! (1)
Picked up a Demon King to be a Maid (1)
Akuyaku Reijo Ni Koi Wo Shite (1)
My Death Flags Show No Sign of Ending (1)
Renegade Immortal (1)
Recommendation Lists
  1. Enjoyable read
  2. Top Rated and Battle Academy Novels collection
  3. Novelas de infidelidades y rechazo
  4. Authors Who Know How to Write Emotions?!
  5. Early Yandere

Latest Release

Date Group Release
04/20/24 Sads Translates… c337
04/13/24 Sads Translates… c336
04/06/24 Sads Translates… c335
03/30/24 Sads Translates… c334
03/23/24 Sads Translates… c333
03/16/24 Sads Translates… c332
03/02/24 Sads Translates… c331
02/24/24 Sads Translates… c330
02/17/24 Sads Translates… c329
02/14/24 Sads Translates… c328
02/10/24 Sads Translates… c327
02/03/24 Sads Translates… c326
01/27/24 Sads Translates… c325
01/24/24 Sads Translates… c324
01/20/24 Sads Translates… c323
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67 Reviews sorted by

AsuraEND rated it
December 6, 2019
Status: c225
Dense Protagonist? I don't think he's dense at all, it more like he thinks the princess actually hates him, and for a good reason to. The chick takes tsundere to the extreme. I mean if someone spreads rumors that I'm a pe*vert just so I don't get a girlfriend I'd think that the chick hates me.

Hell he doesn't even know that they're gonna get engaged while the princess does know.

... more>> Edit:

Rather than calling him dense, I think emotionally repressed would work better. He's never truly had any meaningful role models other than Sadiz. And we all know that he genuinely loves her, she's practically raised him and has been his number 1 supporter. Earth's mother was never around and his father only criticizes him and compares him with the other children. In all honesty the author did a really good job making me genuinely dislike Earth's parents and his Princess fiancé. <<less
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Whiply rated it
November 26, 2020
Status: c54
Novel is really good but I wish translation team dropped it.

This novel deserves more than low quality mtl, seriously translation is so bad, read it if you have patience

Sads scans please drop this and let someone else take it. Just mtl something and ask for patreon money is disgusting and you are destroying the novel. Biggest turn off for this novel is translation quality, other than that it's great imo.

... more>> Horrible translation ruins it tho.

Edit: I came back after a year, and I'm sorry for being harsh lol. I remember the translation as really bad (I stopped reading it because of that so I can only remember) but you guys are at least still translating it. It seems I was kind of immature back then lol. I still don't like the translation though, no offense. <<less
73 Likes · Like Permalink | Report
March 19, 2020
Status: c101
It starts fine as the MC gets away from his problematic family and acquaintances, and goes adventuring while having a maou instructor possessing him. After that, it's just a typical story of a dense and naive protagonist having world exploration, strengthening himself and gaining harem members, with many clichés along the way, which is disappointing.
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Meloonseed rated it
November 27, 2019
Status: c10
Translator-san, author-san, you better not drop this >: (

Alright. We got a decent MC. He's not the most likeable, not the least likeable. He's just a regular person. Being pissed, by regular people reasons. Yeah. I also like that he's not an omniscient and omnipotent guy. He's a little bit dense, but it's kind of justified imo. And btw, he's not going to be doing the against the whole world thing like in the synopsis.

Alright, I'm not sure where I'm going. But I know this read isn't worth only 3.9... more>> stars. Might be, for the people who want to read power level shit, but. Yeah, if you want to read a less empty feeling novel where the story isn't really focused on beating up people but rather the relations, here. <<less
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restiaest rated it
February 22, 2021
Status: c371
This is my first review. I am a long time reader and am usually lazy to write a review. However, I would like to express my thoughts on this great masterpiece. I've been reading novels since 2013, started from SAO, and ventured from jp to cn and kr novel. As someone who expanded the horizon reading through tons of cliche, no doubt this is quite a typical shonen novel. I've seen people flaming about how it's just training and fighting stronger opponents, rinse and repeat, just like your typical Chinese... more>> MC (lol).

However, all the fight scene and training are the key process to building the MC to what he is at the latest chapter. None of these "old" fight scenes and characters are forgotten and are forged into an experience for the MC. He's depicted as a spoilt brat at the very start despite not having his effort recognized. As the story progresses, we can see how he changed as a person, how he handle his "love" relationship and dote on his younger "sibling".

At one point, it can also be seen from how he handled and faced his family and friends when they met again after he left home. Yes, he is dense at times and you may think he is just being a wuss. He is just 15yo and has his own conflict/ thought process. The realism instilled by the author can be felt tremendously, such as the awkwardness and internal struggle.

The world-building is great and everything is related to one another --> explained in further chapters

TLDR: This is not a typical series where the MC just fight and grow to fight stronger opponents. The main joy for me is the interaction, and how the MC grow to become less of a brat: from how he left home, found a friend who then left him for his own sake, expanded his horizon by mixing around with people from a "commoner perspective" and "underground operation", to him finding a new "home" where he is welcomed and appreciated for who he is, while also facing new challenges only to solve them and gaining new allies/ friends in the process. If you are at c100+ of this novel, the best has yet to come (not gonna touch on this, huge spoiler). This novel is about world-building, character growth, to the point of how the world is at its current position (demon vs human war). Everything is well explained.

ED: typed this immediately after reading the novel, omg so many typo and grammar errors lol (touched up on it) <<less
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twdavis78 rated it
January 2, 2021
Status: c101
The beginning of the story is quite fun and enjoyable - enough so that I google translated a bunch of it beyond 102 because I couldn't get enough of it. Unfortunately, as the story goes on it becomes much like a Rocky or Creed movie with everything but the training montage and fighting stripped out of it. As the lead grows stronger, the story becomes empty. Any female interest appears and than disappears like a fart in the wind when their arc is haphazardly done with minimal further development which... more>> makes the story develop boringly as the male lead single mindedly trudges along to the next battle. <<less
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Lulsec rated it
September 18, 2022
Status: c227
i spit on this book, utter garbage. So much lost potential. Intriguing start yet disappointing afterwards.

author has never felt the touch of a woman, I think this book is the result of his loneliness, I don't think this creature ever looked at himself in the mirror and thought, wow! I really like the decisions I make!

300 chicks around MC, some of them wanting his seeds yet he doesn't touch any of them barely hugs 2 of them. Poor bastard probably regrets being the result of this alien-like creature author imagination.... more>> Author monkey brain can't even comprehend how women even think or act more less how to talk to one.

the plot doesn't make sense, protagonist parents act like teenagers, MC is mentally deranged and a pu*sy on top, most of the girls around him are such annoying, wrath incurring whores it makes you wanna slap all of them, no world building at all, everything goes in the favor of MC he can never lose you can predict what he will do next and there is no suspense whatsoever, also virg*n author on top of all of this? And still 4* rating?

who in their right mind would give this disgusting thing a 4*? I wanted to compare this to other 4* novels but it doesn't even have the right, I would be spitting right in their face if I did. Absolute garbage waste of my time I read 227c expecting something to change since I saw the ratings yet all I saw was a generic japanese book with a generic japanese MC alongside generic japanese plot. Horrid <<less
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Hugh Mad
Hugh Mad rated it
June 6, 2021
Status: c136
It starts out well, but this is a shounen slapstick immature story made for teens. If that is your thing, by all means go ahead and read this. The translation was barely readable and often made things confusing and unclear. Also the TL uses "little man" instead of young master or something of that type, which I believe significantly affects how readers might perceive the dynamic between Sadith and Earth. Overall, not great, but some people might enjoy it.
15 Likes · Like Permalink | Report
Light novel junkie
Light novel junkie rated it
February 18, 2020
Status: --
I'm loving this. Now that that's out of the way here's why :

Main character isn't another naruto/kirito. No deus ex machina power of friendship bs power up. He's actually putting in effort to get to his goal.

MC is more relatable as a person. Not another npc esque MC who when mocked and ridiculed just takes it with a grin and wins those who mocked them over because never give up.

The characters. Really only ones I actually like are earth, the demon ming and sadiz. I literally want MC to verbally... more>> decimate his parents and that tsundere to the extreme princess in the most epic of ways. It literally raises my heart rate thinking each chapter brings us that much closer to that. <<less
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sdgao02 rated it
June 19, 2020
Status: c61
I think this story is great. The main character has understandable issues with his family and the world/country’s perception of him. All the kid wants is to be recognized for all of the effort he has put in, and to not be known as the “son of the hero, ” but rather as himself. I find the plot extremely compelling and honestly can’t f*cking wait for more chapters to come out to see how the kid turns out in the future.
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Funggen rated it
March 14, 2020
Status: prologue
Novel with great MC. I never knew a teacher and student relationship could be this exciting.

I am happy that it doesn't following the temp. But, those naming sense lol..
10 Likes · Like Permalink | Report
The Hamster Overlord
The Hamster Overlord rated it
November 30, 2019
Status: c11 part1
1. It's a cliche story with a school Boi MC who has daddy issues and average rebellious teen problems. And it possibly has harem elements.

While I usually despise such stories, this one makes MC, at least at the time of my reading it, much more human and much more relatable. One can actually invest into his character and feel bad or sorry or embarrassed for him. His problems feel real and relatable. I like it. The rest of the cast - pretty meh, honestly. The demon king character is somewhat... more>> unfleshed-out.

But overall the story so far is light and enjoyable. It won't have much depth, possibly the quality will go downhill but I at least hold some expectations. That's why I rate it with the generous 4-star score <<less
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Heimlich Manure
Heimlich Manure rated it
August 11, 2021
Status: c150
I don't know what people are talking about when they say the story gradually becomes worse once:

... more>>

Earth is forced to leave his hometown


The story, in my opinion, becomes better after the tournament in the school. One of the reasons is because of the characters. New and interesting characters are introduced as the plot progresses. Specifically:


Mr. Aka and Bro. Mr. Aka is honestly just one of the most wholesome characters I've ever seen, despite being one of the stronger demons who was once under Trainer's army. The part where he leaves a letter for Earth after they fought was legitimately sad since he was really a nice person even if he is feared. Bro on the other hand is a special case, being a member of a gang - supporting others while desperately trying to keep the business his gang runs alive, his resolve for not surrendering against the noble ruling their establishment is a nice touch to his already well-written character and background


Earth's relationship with his master and Sadiz is also one of the reasons for why this story keeps getting better. His relationship with his master especially is very unique. His master, despite being The Demon Lord, lived for thousands of years and has accumulated the experience and ethics to pass down to Earth, in turn making Earth a better person overall than who he was in the beginning of this novel not only strength-wise, but also mentally.

This novel overall is a worthwhile read to recommend to those looking for a 'different' shōnen, a slow build-up of Earth's power in an unusual way, while having good pacing and good characters (except the princess, I hope she isn't a love-interest at this point) <<less
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This novel feels like a shounen manga in light novel form. It's a great story that just feels like it's just getting started. If I were to describe the first arc, it felt like going back to the Land of Waves arc in Naruto. I feel that the world is bigger and that what we've been shown is the smallest portion of it. From what I can tell the next part would be amazing.
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KDV rated it
April 17, 2020
Status: c48
It's a good ln to read for my opinion although I havent read much. THANK YOU the author for creating this. The MC was very relatetable to me in a way.

... more>>

LIke how he is being compared to more talented people and being ridiculed by random people who knows nothing of his limits and abilities. It kept me interested in the novel hoping for the day he sticks it to them and makes everyone remember his name and power. I almost cried at the end of volume 1. The moment where he gave up on making people see who he really is and left everything behind.


I hope someone picks it up. Thanks for translating it for us Sads. And thank you to the future translator. <<less
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Redmi rated it
January 30, 2020
Status: c218
This is another novel that taught me to not judge a novel by its title. I have seen this novel around for quite some time in novelupdates' index but I ignored it because the title reads like a ghey CN novel from jjwxc. One day, my finger sleepily slipped and I touched the hyperlink for this novel. Only then I found out that this novel is a JP novel. Seeing that there is no yaoi tag there, I started to read this to see if this novel will get into... more>> my 'recommendation' list or not.

Voila, I am so impressed with what I have seen from what has been translated, I decided to continue reading the raws, for 4 consecutive arcs.


This whole novel is pretty much a Tengen Toppa Gurren Lagann fanfic. The fact that it gets a novelization without being sued to the hell and back is a mystery by itself.

The first arc (tournament arc) is great, second arc (the first best friend arc) is meh (the only good thing in it is the MC met his DFC Princess Nia waifu) and the third arc (where MC met with a guy similar to the dragon guy from Demon King, Retry novel) is just a little bit better. The fourth arc (another tournament arc) is just as good as the first one, which greatly redeem the series back. And from what I have read for the fifth arc as of now, it should be better than 2nd and 3rd arcs, but not as good as the 4th or 1st ones.

Conclusion: Novel needs more tournament arcs?


⭐⭐⭐ from me as of now.

edit: As of latest chapter 218...


The fifth arc turns out better than expected. It is not good as the preceding 4th arc but is vastly better than the 2nd and 3rd arcs. This novel could have been much better if the author doesn't make the 3rd arc as bad as it is now. Maybe a rewriting is in order for the 3th volume of the light novel?

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ReanuKeeves rated it
August 9, 2021
Status: c73
Sadly this story falls apart after the first part or Part 1 as label on translation site. After Part 1 everything becomes bland and boring.

The build up in Part 1 is the best of it. The character interactions and whatnot. Also the MC seems somewhat realistic which was what I liked about it.

But after that.

... more>> After that...


It defaults to typical JP Shouen adventure that steadily starts to go all harem route with girls chasing MC. It is just boring and bland. I was hoping this would go some other direction, but Part 1 is fully misleading and after that you will just find yourself in room for a series of disappointment.

Don't let all these high reviews fool you. This isn't a great novel. It is just very cliché and has nothing going for it after Part 1. (You might as well say Part 1 is a honeytrap to suck readers in, but afterwards the novel does the opposite and starts to literally suck.)

The two stars are modest enough. I would give Part 1 around 4 stars but everything else afterwards is one star. <<less
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qwertt rated it
April 28, 2021
Status: c128

If I had to use a few words to describe the series it would be-old school shounen, very good and intense fight scenes with MC tryina breka limits with each battle, character development is PEAK, from how he turns into a person stronger than the hero from a spoiled brat is amazing.

Though romance is there, but its rather timely and not something you will find in all the chapters and its starts becoming rather less (till 128) compared to the initial romance, good amount of friendship as well as... more>> interactions. The teacher never gives up on the MC and doesnt go easy on him either. Though there are some characters about who we can be wary about, there are no Clear enemies till now however that might change in the near future

Would I recommend this?100%! <<less
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KamiKira00 rated it
June 18, 2020
Status: c30
Interesting story of a child of two heroes. Despite doing better then parents his age, he is always looked down upon. Despite doing quite great princess always verbally abuse him, father claims that he is worthless (it was said in other words) and he was never there for MC.

Despite serious MC relations to others, this story is a comedy (typical isekai-ish type story) where all those abuses through MC's life disappear as if that never happened and everyone lives happily ever after (good example is how with 2-3 exchanges during... more>> one conversation with his father, MC suddenly forgot all that neglect and almost claimed that better parents can't exist). I seriously instant jumps that doesn't make any sense (That happens when author stops looking at the story through MC's eyes).

Demon lord who went on a genocidal mission is happy go lucky guy??? Just based on that you can see that this story is on "Arifureta" level.

Just for that I can't go past 3.5 points barrier. <<less
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mustafajennings rated it
January 6, 2020
Status: c60
The story is great, it's really a breath of fresh air compared to similar novels. It takes roads other novels wouldn't.

Almost everything that happens in this book happens for a good, justified reason. The author likes to foreshadow things, and every chapter has a reference or two: ... more>>

the MC's last name is Lagann and his best technique so far is a magical drill. Also one of the ninja techniques is literally called "Uzumaki Naruto"


Rather than being able to see what will happen in this book by using your experience of other books, you use your experience of real life. You can see that almost without thinking the MC will do something potentially life-changing in the future; then, when there are actual consequences, all you can say is "WHAT THE HELL DID YOU THINK WAS GOING TO HAPPEN!?"

This book makes use of some tropes (not including reincarnation) simply as a way to help reader understanding rather than to make a cardboard cut-out story. <<less
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