>>2683248In general, the conflicts of each character are too heavily glossed over. They have a good medium to really delve into each conflict, but they gloss over it on the most basic levels.
Hiro: His route needs more complexity. The only people who claim that he's "toxic" are kissless fujoshi virgins. He needs more personal anguish, he needs to be more worried about Keitaro's feelings and future. Even just adding five-six scenes where Hiro and Aiden talk, and Hiro genuinely questions if he's doing the right thing. They don't do enough to humanize him, to make the player sympathize with Hiro's feelings and actions.
Natsumi: I actually like his route a lot. They just do a bad job of making him a believable character. Natsumi should at least have some theoretical knowledge of sex, and it'd be better if his wording was less technical. It'd be good if felt some shame at his lack of experience, and Keitaro worked up his confidence to their initial sexual encounters. His initially trying to be 'one of the guys' would give a big hint about his insecurities, and would make the arc with his brother more worthwhile overall.
Yoichi: Bestboy has the best story, and it needs more meat. I'd like Yoichi to warm up to the point where he clings to Keitaro, and when Keitaro brings up that it's too much, Yoichi feels betrayed and that begins the dog arc.