Story: 10
The time travel trope tends to either be done poorly, or be done well, there's usually never any in-between. It was done in an interesting way in this, and definitely done well. It's equatable to how Steins;Gate did it, granted they're two different styles, it was handeled in a way that they're close enough to compare (the way time traveling is handled, not the genres). I can't say it's the most unique, but it's a type of time travel that's not too common, especially with how the MC triggers it (or rather, how he doesn't) All in all, well written story that'll keep the reader wanting to continue till the Happy End.
Art: 10
I'm a sucker for this style of art, so this is a bit biased, and there's not much to be said, but this type of art where it has a sense of almost realistic mixed with the anime style, while also having a well shaded "dark" aesthetic, it's great. The character designs were all recognizable, simple, but well done.
Overall: 10
Has a great psychological horror feeling, the mystery is very captivating, the brutality is there, but not unrealistic (despite being a very unrealistic situation). Give the manga a shot, if you like bloody time travel stories, you've found a great one. If you're a fan, pray for an anime adaption, because this would be an amazing one.
