Legendary run of pages 8-12. Its funny that she's been the last out of the 3 to kiss him, but might be the first to fuck him, though I think the virgin might be the first. Funny again how the 3 are in such fucked up denial about it all. We need a chapter or two of just the three of them talking. Once again, very clear to me that Ueno wasn't the only one to walk about from that experienced damaged in some way. While he has it the worst, the others are twisted as well.
Generally speaking what he now has with her isn't particularly unhealthy by actions alone but Ueno needs to nut up and talk with the crazy bitch. She's admitted that you exclusively get her wet and excited. Just a few minutes of reflection should give him some idea that maybe, this can be a positive thing.
Very interested in what it's going to look like when all 3 figure out they've been messing with him individually. Chisaki is clearly very jealous and dominating. From the looks of things, it was mainly her acting out the bullying while the other 2 watched nd played around a little. What happens when she knows they've been kissing him and making him cum with their entire bodies?
Then we finally have the Manaka, the only well adjusted one, so far. What'll happen when she digs more into their history and relationship. She's obviously crushing on the guy. Between accidentally spotting Ueno with the virgin or lesbian doing something or seeing Chisaki's phone, there's lots of potential.