Don't waste your time it's not good. The characters are really boring and forgettable, they are all characters that have already been thought of, all really really basic. Story pacing is bad. Premise is interesting though and it's an interesting idea but the execution is really bad.
I don't mean to discount others' opinions, but the 7.7/10 average score is heavily misleading. All of the main characters feel like side characters, and the story itself has an interesting concept at its core which I will admit, but the execution is awful. The character introduction is pretty bad as others have noted. The pacing of the story is pretty bad as the beginning feels kind of rushed and the main character randomly becomes a badass with no prior indicator he was anything like that.