Very interesting manga. The MC is trash but that’s what makes his growth all the more interesting.
As the story goes on, the original description/premise/title sorta gets deemphasized and it becomes more of a mystery/redemption story. I would not trust the ratings at all since the premise itself is a huge “normie” filter, I’d say it’s more of a 7-8 than a 6, not a masterpiece but not worse than other average series I see rated 8+.
The art style is unique and expressive which makes it fun to read, not a typical style you see too often. I like that MC is usually the only one drawn in the most hideous or below average way while everyone else is drawn attractively which makes it all the more funny.
There are heavy topics like rape, murder, suicide, and school bullying, so that might dissuade you from reading. Also a lot of ecchi (a lot of it censored, some not). The tag says time travel + drama so expect bad things happening to people. The prevailing theme is “regret”, and the nature of it changes greatly throughout the story.