I hope he finds love too but I dislike how he pushes his beliefs unto our mc, like when he says "You don't really think people like us can pick who we love right." I get where he's coming from but it's essentially saying that there's something wrong with gay people that they have no choice but to give up on love and settle for whoever. That's such an unhealthy mentality to have.
I went to check to make sure I wasn't misjudging him and I'm pretty sure it's labeled as assault. Senpai says "It's been awhile," which means they haven't been sex friends for some time, and then proceeds to forcefully kiss him and grab his ass. Mc immediately says "Please stop it," but senpai still takes a few second before taking his hands off. That's not consent so yeah, it is assault. I get you like him, and there's definitely room for growth with his character, but his actions are not okay.
That mizusawa senpai bitch ass is such a creep. He's been manipulating this poor kid since high school and had the nerve to sexually assault him, what a creep!
Plus there's no way our daddy doesn't already know that our lil cutie is gay. He definitely saw it that day when he stayed behind to clean the basketballs.