it was one hell of a ride. A reverse isekai about a demon lord who works part time at a fast food restaurant because of reasons lol. I won't go in too deep with the story but it was great (although at later volumes there is some sort of politics and well) , the characters and relationships develop overtime and the comedy is still there. Alhough I got bored midway, the reason I kept going was just to see through what will happen to emi and maou by the end. And oh boy was I satisfied until I read volume 21. Again, I won't go into the details but just know if you are reading for the same reason as I was then you better be prepared for the ending cause chiho wins. Not only that but she also solves all the problems in ente isla. Wow what a great girl right? No wonder maou became a human just for this lovely person and left emi as a single mother. But jokes aside, I am really dissapointed with the ending of the series, thinking that it really could have ended better (probably it was rushed). It's like going on a trip only to end up finding that your destination was not as good as your journey getting there. There is still a lot I want to say but you could really find other people's thoughts that explained things better than mine.

We were introduced to the cast at the start of the story, the demon king ML and supposedly what we all thought was the FL, the hero. Throughout the novel it also seemed like the hero was gonna end up with the ML such as the baby treating them both as foster parents etc. We expected the ending to either be that of a harem, sole wife (Hero), or end up with no one at all. The author defied all logic that he has written and pulled out some weird ending instead. We were blindsided by this revelation... This pairing had actually left a lot of plot unresolved because it was just so unconventional and wrong.

You might be thinking I'm giving poor reviews just cause my "best girl" didn't win but no, the plot itself calls for the best and only girl to win...

Mao chose Chiho

So all the character development of Emilia became nothing, as all the reflection she had gone through with and as if the author tease us that she will be the who our MC will end up with just thrown away like nothing happened. A very S*ity ending.

Everything pointed at Sadao and Emi getting together. It was obvious that the whole story went in this direction. But the author just had to take a U-turn right before the finish line and fall off the road into the deep abyss. Why the hell did Sadao end up with Chiho?

The author carefully revolved the whole story around deepening the relationship of Sadao and Emi, a truly unique couple in the whole industry with a great dynamic. For the major part of the story you could even consider them as pretty much an established couple. Their relationship had been just so close and it was quite precious to see their initially hostile relationship changing for the better, especially with Emi slowly falling in love with him. There were so many clues that showed (not only indicated) even the author should've shipped them a lot.

So I fail to understand why he suddenly had to throw their relationship (and with that the whole story) into the tr*sh bin and have Sadao end up with Chiho, a bland heroine with minor development who remained in the background for pretty much the whole story (there wasn't even a moment that showed Sadao seeing her as a potential love interest) only to have her play a key role in the last volume (it seemed also incredibly forced). While you could see the relationship with Emi gradually changing throughout the story, there wasn't any change worth mentioning in Chiho's relationship with Sadao for just about the whole story. Honestly, I would've even preferred Suzuno over Chiho as they have better chemistry.

that is until the ending where the author decided to throw away the plot and the MC’s personality and goals in favour of a Mary Sue.

I didn’t even hate the Mary Sue in the beginning. She had her own role to play, but then Wagahara had to make her the most OP character and had her stick her nose in situations she had nothing to do with...

I feel like Wagahara gave up on the novel halfway and made everything that happened in the first half of the series pointless. He could have better rewritten the story to make that horrible ending more reasonable sounding. The ending is an insult to every writer who put their soul in their work.

It is very, very apparent that the translation team needs a beta/editor. A lot of times I keep reading paragraphs with incorrect grammar, spelling, or down-right confusing the characters with another (I.E. Sentences like: "Suzuno said this to Suzuno.")

It sometimes gets difficult to read, and I honestly could bring the score down because of this, however this would not reflect on the LN's over all story/writing style so I can't really bring it down.

Emilia:
Emilia-a-shit!
She's a basic Tsun-tsun who, only at Volume 6, hasn't shown anything you could consider even remotely cute. You could defend her for being "broken" because she doesn't know what to do with Maou (since he's originally her enemy and target of vengeance), but this does not excuse her for being shown as a sh*t character with an emotional range of her flat chest. Basically, she's been shown as nothing but a complete bit*h and is only mentioned off-screen to be "kind".
This is a terrible way to show off a main heroine, as we never see the "off screen her" where she interacts cutely like a normal girl and isn't always the pissed-off bit*h that we always see.

Chiho:

Best girl by far. Has shown character growth from the very moment we see her and has gone out of shy shell, even as far as confessing her love to Maou. She's even willing to learn magic, not as a way to get stronger, but because she wants to lessen the burden she is as a "normal girl" to Maou and the others.
10/10.
Deserves to be the Demon Queen.

Would point my feet away from her direction from sleeping

Suzuno:

Actual girl I'm rooting for. Chiho is just best girl by what she's shown but, I'm hoping Suzuno somehow worms her way into being his mistress or something.

Why?

She's has gap-moe! That's why!
By default, she has a serious character, but when she gets flustered, she acts in a cute, girly way and doesn't react so violently as Emi. Sadly, she hasn't gotten much of a spotlight just yet. She'll get more probably around v9 so I'm making my way there.

Currently at Volume 2 chapter 3. It might seem a little early for a review, but I think my current critique would follow out throughout the story.

The author's writing style is bad when it comes to new characters. In the beginning, it isn't that noticable, but it becomes apparent as more and more characters are introduced. This is VERY apparent at the end of Volume 1 where the other members of the Hero's party arrive after the battle.

They were just suddenly there! I mean, there was like 2 or 3 paragraphs where these two guys are mentioned to be traveling to Earth, but on this particular scene, they didn't get an entrance. They were just suddenly there! There was no opening of an otherwordly gate or of them walking up to a battle-scarred street. They were just suddenly there and I'm like "who the f*ck are you?! No wait, Mao. Don't just go with the flow! AGH You guys know each other but we're on different side of a war! Why are you acting so casual!"

This also happens on conversation topics and event scenes. They suddenly seem to change without any warning to the reader.

Granted, it's not unreadable, but it is this story's flaw! The story itself is interesting where you'll have to read in-between the lines to understand the characters completely. Definitely recommend it, but it's not a very light read. Prepare for some introspection.