I...I don't even know where to begin with how awful this manga was.
I guess I could start with how a lot of the deaths/general scenes of violence in this manga were very sexualized which was...rather disgusting considering a) the characters are underage, and b) some of the scenes of violence included sexual assault.
I guess I could also mention how there was the whole incest aspect which, correct me if I'm wrong, I don't think was in the canon storyline for the games, much less reciprocated in a bizzare and uncomfortable way.
I guess I could *also* talk about the transmisogyny in how Miyu constantly had up close shots of her genitals, was misgendered multiple times, was the first character to be killed off IIRC, and was referred to by a transmisogynistic slur at one point, which, all of this combined just felt extremely upsetting to read.
Overall, this manga was just a very uncomfortable experience and I would recommend anyone wanting to get into the Corpse Party series to just skip over this one entirely.