Going Back and Forth Between Earth and The Other World with Space Time Magic


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Though he received the skills necessary to teleport across worlds, the king who performed the summoning ritual attempted to trick him into wearing a slavery collar, this annoyed him so he kidnapped the princess and returned to Earth.

While traveling between worlds with the skills he received, together with the kidnapped Princess and his little sister, they lived happily ever after?

Associated Names
One entry per line
Jikuu Mahou de Isekai to Chikyuu wo Ittarikitari
Related Series
Because There Were 100 Goddesses in Charge of Reincarnation, I Received 100 Cheat Skills (3)
Everyone Else is a Returnee (2)
Isekai Quest After School! (2)
I Work As A Healer In Another World’s Labyrinth City (WN) (2)
I’m a NEET but When I Went to Hello Work I Got Taken to Another World (LN) (2)
The Elf Is a Freeloader (2)
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Latest Release

Date Group Release
05/29/19 FoxTeller c428 (end)
05/29/19 FoxTeller c427
05/29/19 FoxTeller c426
05/29/19 FoxTeller c425
05/29/19 FoxTeller c424
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05/13/19 FoxTeller c421
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05/13/19 FoxTeller c418
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05/01/19 FoxTeller c414
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51 Reviews sorted by

New talosparoxi
March 23, 2020
Status: Completed
I quite enjoyed this series, it had a good flow with interesting, though at times irritating, characters, as well as an interesting concept that your ability to use magic is based on your understanding of the fundamental properties of the element you are using. This work can be kind of frustrating at times as a lot of the time the main character takes a very middle of the road approach to his problems.

At first it seems that he'll use his abilities to get ahead in life in a realistic manner,... more>> through things like having a skill that warns him about danger helping him debug a program, but then the next moment he's doing things like selling magic potions to his boss and creating highly intricate jewelry with magic.

Suffice it to say that while the series is pretty fun at times it's a bit too all over the place for me to give it a hearty recommendation. Not even mentioning that the web novel seems to be on an indefinite hiatus.

If you just want something light and interesting then this is an okay read but you could easily find something more fulfilling. <<less
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abdullah Youssef
New abdullah Youssef rated it
March 11, 2020
Status: --
I never write reviews but I need to say this: have aya killed or anything, the already useless 30 year old MC is being stunted by that waste of oxygen. I'm not gonna lie, at first she was interesting and was my favorite for a while, but now I absolutely despise her, and her slightly less annoying but equally useless brother of a main character keeps getting beat up by her for the pettiest of reasons despite supposedly being strong enough to ... more>>

beat the demon king.

Honestly, I started fantasizing about the MC dropping her in the middle of the pacific or returning at least a quarter of her kicks to make her somewhat docile. ABSOLUTE TRASH AND AN ENORMOUS WASTE OF POTENTIAL. <<less
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UnknownSaint171 rated it
May 11, 2016
Status: --
I'm not going to lie. Having several 15 - 18 year old girls fonding over a 30 year old middle age man is disturbing... Its true that the Main Character doesn't even act his age.
... more>>

the only girl is Nancy whose in her mid 20s. The author could had made her main heroine and really used her character... but instead made this Novel really weird.

Don't let the Synopsis deceive you! I thought this would be a heart warming fantasy. But there's no plot or character development. The Sister was impressive at first but then suddenly turns to 'love' for him. Honestly there are better stories to translate out there so why this? I don't mean to sound like a jerk. Sorry but that's the truth.

I do admit there are entertaining parts when there's Slice Of Life with Magic in the Modern day society.. but the Author could had made used of it better.

This Novel will end either 2 ways.
1. He will go live in the Fantasy World and takes all the girls and make them his wives. Due to having no laws and having a lot of freedom. (The sister incest and young girls who fall for him)
2. He will send the Princess back to her world and lives his life without Magic and goes back to his Normal life. He has already caused many disturbances with Magic in both Worlds. I Can't see this ending any other way. <<less
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Sheep rated it
June 13, 2016
Status: c176
If you like to be blue balled and abused this is the novel for you! But here is why you should read this novel/sarcasm!

1. There is no plot in this novel (fair enough its part slice of life)
2. The main guy is 30 year old doutei (read: virgin) who has godlike power but still accept abuse from his sister (read: imouto) without reason.
3. The main girl wants the D but due to the existence of imouto and the fact that the MC is a giant balless male... more>> species he never go on!
4. Fight is basically, I use Thunderbolt! Pikachu fainted due to using thunderbolt. gg.
5. Character progression a lot of them!... is not present at all.. <<less
77 Likes · Like Permalink | Report
Water rated it
February 13, 2016
Status: --
Honestly at this point I feel like there should be another tag called "herbivore protag" or "protag has no balls". Which takes protagonist mindset into account rather than actual abilities/powers. My personal preference is that I hate this kind of protagonist. 70 chps later and there's literally no character development, protag is still mentally still a shrimp and can't even call out on others for their shit.

Tags says "protagonist strong from start" but well, a pu*sy with cheat powers is still a pu*sy in the end. I can't recommend... more>> this story towards anyone else but well... other herbivores who wants to read some guilty pleasure selfwank fantasies for herbivores. <<less
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jgfenix rated it
April 19, 2016
Status: --
A total waste of time. The idea could be interesting but nothing happens. The character development is inexistent and the little sister is annoying (there are annoying little sisters characters that I like but I can´t stand this). Dropped.

Not exactly the same but if someone wants a slice of life with fantasy and action where there is actual plot development read "The man picked up by the gods".
24 Likes · Like Permalink | Report
That1guy rated it
April 1, 2016
Status: --
No action no epic or cool moments well how should I say it... It’s boring, there is no romance MC is dense, MC has no motivation or interest in the other world other then profiting and going there as a vacation.

Read till 121 and I’m tired of his I do this cuz of Elena and his little sister is annoying... btw r-15 is stupid no use of profanity or any thing for that rating in all I am dropping this cuz I thought he would change or at least do... more>> something cool and epic that gives flair to the story but no such thing happens only small skirmishes and light battles <<less
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A name is useless
A name is useless rated it
December 24, 2017
Status: c203
In the top 3 of the worst novels i've ever read, everything is bad in this novel but the worst in this novel is the character "Aya" the MC little sister, introduced in early chapters, around chapter 10, and sadly stick with the MC for the all story, she's the most annoying character ever seen in a novel, it's insane, she's a spoiled child who have 18 years old but act like a 12 years old kid, the MC will listen an follow every orders from her (yes orders because... more>> she don't ask, she order) like "buy me this, buy me that" or "cook me this, cook me that"...

The MC don't have a personality, he's just an idiot who did everything that spoiled annoying reatarded sister tell him to do. The fights are bad written, the world building sucks, the magic system is truly stupidly thinked. Well when you read this novel you will just be bored and annoyed, the plot is missing, every characters are complete idiots with lack of common sense. I don't know why I read 203 chapters of this but I drop this immediately.

This novel can be resumed in 3 words: STUPID, ANNOYING and BORING.

A little advice from me, don't waste your time, DON'T READ THIS SHIT, you will just become an idiot by reading this novel, a novel wrote by 12 years old kid will be better in all than this crappy novel.

13 Likes · Like Permalink | Report
SeventhTale rated it
May 20, 2016
Status: c156
This is more like a slice of life type of fantasy-harem story. This is not like other series, which has a wider plot. The description says, "the 3 happily lived", so it's better to think that the whole story is more like an epilogue about how they are spending their daily lives in the other world and in earth.

Though the character's personality doesn't match their age like the MC and his imouto. This novel is very relaxing and fun to read. This is not a type of novel that has... more>> a serious atmosphere and lot's of conflict. So it's better not to read it if you want a wider plot. <<less
11 Likes · Like Permalink | Report
Domar rated it
April 19, 2016
Status: --
I don't know what it is about this series, I can't get enough of it, every single chapter leaves me wanting more, even when I look at it objectively and see the flaws, 130+ chapters in my excitement to read each chapter hasn't vanished. Though, I could really do with no Aya, she dropped in so randomly and seems to be there entirely to annoy and block the fun of everyone.
11 Likes · Like Permalink | Report
skycat rated it
October 17, 2016
Status: c279
The start is nice, though cliche but I enjoyed it. However after like 100+ chapters, I have felt that the story has suddenly lost its sense of direction. It doesn't have any goal or specific plot. It just flows as is like a normal slice of life story without any direction. Although it's still a nice a relaxing read if you don't hold really high expectation in the story.
9 Likes · Like Permalink | Report
Maracas rated it
March 15, 2016
Status: --
Honestly idk why this is rated r-15... because of the kidnapped thing? Well if you take it at heart it should be r18 because MC is 30 and kidnapped girl is 15 xD

r15 tag is wasted, there are not even bad words.

I couldnt continue reading after random sister introduction (i did read some random chapters to verify if there are bad words, blood or implicit s*x scene nothing xD)

It seems people compare this with death march, that one I hate (MC more than anything) this one is bearable (MC... more>> is interesting)

And death march is a world of lolis (below two digits year old) at least here there are people of random age.

MC and party (idk if harem but I seriously doubt it) have a rather easy life considering he kidnap the kingdom’s princess and there may be some movement of the demon race (like come on even if the demon race is just a group of sheeps a wolf have been summon to kill them)

The lack of plot with that introduction is really bad :/

I cant say it is a casual read because most of the time the reader will be pissed and that is not casual xD

All in all if you dont care about plot or wasted tag read this, if you dont care MC and want decent plot read death march xD <<less
8 Likes · Like Permalink | Report
Cryarc rated it
September 2, 2016
Status: --
The beginning chapters of the series feels charming, it was pleasant to see an actual adult as MC in an isekai genre but then suddenly the MC acts like wimsy teenager. It goes from refreshing theme into cliches/tropes. Sometimes even the Japanese readers are questioning the author's intention for the series as the series becomes dumber and dumber as it's going on. At first the joke is quite fun, though it's not the laugh out loud type jokes but a smile inducing jokes, but at the latest of the series... more>> it becomes cringe worthy; I still can't fathom the author's intention in creating terrorism scenes with laughable villains that just suddenly popped up in public without clear purpose, and the ninja jokes... <<less
7 Likes · Like Permalink | Report
SageRozenburg rated it
June 1, 2016
Status: c171
A relaxing novel, if your tired of fantasy mixed with a lot of scheming people, this is a good novel to sit and read, though plot is pretty straight forward. It's enough to kill time.
7 Likes · Like Permalink | Report
aldrinkhan rated it
May 17, 2016
Status: c153
A good time killer. Nothing special. Nothing hateful. More of a slice of life with magic and a meddlesome naive MC. Probably the fact that MC is in loli land (not in a lovable Death March kind) is a turn off.
7 Likes · Like Permalink | Report
GluttonGirl rated it
February 13, 2016
Status: --
Casual teleportations, potions, job cheat, pretty much a story about someone level-headed getting a fantasy cheat. But I love it all the same.
7 Likes · Like Permalink | Report
BQDJ rated it
December 4, 2015
Status: --
I’m writing this at c35. The lack of action is real now.

Why the useless sister ? I mean... why... It pretty much messes the whole LN. The guy and the princess are supposed to have some romantic moments sometimes but the sister is a huge downer. She wastes skills too because he ends up giving her what he should have. Ridiculous...

I’ll stop reading it. But for casual reader, it’s okay. it can pass the time. Pretty much Death March (that I don’t like so much, it’s okay though)... more>> but ten times worse. <<less
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Mnotia rated it
January 25, 2018
Status: --
This story had the potential to be the best thing anyone could have read on novelupdates in my opinion but the only problems I guess most people have is that the MC is too dense or the story is just a circle of


That's pretty much it for the plot.

The characters (mainly females) are all 1 dimensional. THEY HAVE NO PERSONALITIES!! Once the MC saves a girl she falls for him..... the absolute hell?!

I couldn't continue reading after:

... more>>

main character saved a noble girl who was kinda prideful. They meet again she blushes while looking at him or whenever he calls her name she perks up.... very cliche.

One time he was trying to check how everyone was doing so he checked his cameras (A skill for stuff) and when he checked the pyramids of gyza a bat had flew towards the camera and died then he heard whispering so he shut it off and the author never brought it up again..... THE HELL?! That could've been like a whole arc on just curses and stuff.


Yea, if you read the spoiler you finally get it. This story HAD potential built then every last one was cut down by the author.

So all in all, the story could've been good but the characters are stale and plot repeats itself.

6 Likes · Like Permalink | Report
LittleFox21 rated it
October 4, 2016
Status: c268
Slice of life OP party which alternates between worlds. Adding real world touch is a refreshment for all isekai fantasy theme.

There are balanced amount of actions, comedies, crisis. Not brilliant, but worth your time if you like casual reads.
5 Likes · Like Permalink | Report
g1aciem rated it
August 27, 2016
Status: c254
This novel is mainly slice of life genre. No drama. No Horror. No plot.
... more>>

At this chapter, the only thing I could call plot is the mystery of Yurie's summoner.
The Devil-kin seem random to me.


I recommend this to anyone who want a relaxed read. There are some things irritated me though.

1. MC's personality: He's 30 years old working man not an unemployed shut-in. Why does his mind process like some teenager boy? What is the definition of life experience? At this point even if the author just replace all the text "30" with "15" I wouldn't notice something goes wrong except he's a salary man.

MC started with childish mind is not necessary a bad thing considering we could see some differences after character's development. Well, that is what I thought at first. As of now, he is still the same...

2. Little Sister: She is unreasonable, hot-headed and selfish.

She know her brother is almost pass marriage age but still obstruct him instead of support his relationship with women. I understand in case of Elena or Hilda that they are too young but what about Lela?

There are some hints that she might has a feeling for her brother. It's okay if the brother is a 18 years old boy and she doesn't want him to have a girlfriend, but in actually, the brother is in the state that he should consider making a family already. Anything she does now is just selfish action.

3. MC got kicked by little sister: There are many series that MC got punched when they involved in R-15 stuff and I enjoyed them. But I think the violence in this one is handled badly. Maybe it's because my bias feeling on the little sister.

To sum it up, just remove Aya and this novel would be a very great read. <<less
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mikaelhg rated it
September 1, 2018
Status: --
Starts in a kind of a reasonably mediocre manner, but past c50+, quickly goes full retard, with characters becoming kind of pointless plot puppets who rush from senseless scene to another, suddenly making completely different kinds of decisions than they did in the beginning.

I hope that actual Japanese people are not as pathetic as Japanese characters written by Japanese authors seem to be.
4 Likes · Like Permalink | Report
Xenety rated it
May 29, 2016
Status: --
A nice twist in being summoned to another world, I like the idea that the MC isn't trap in the world his summoned to and can return to his own world. It's nice break from other similar summoning stories where the MC can't return to their own world.
4 Likes · Like Permalink | Report
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