I don't know if it's quite rape. The first time you have the option to refuse out-right, and the second time the player character seems pretty on board. You get an option to refuse (instead of play along), and he says he could if he wanted to since Summer used her school email, but goes along with it anyway. That you can "play along" kind of implies to me that he's interested and willing on some level. The worst I can think of is the quid pro quo from the dean, and you can still nope the fuck out of that if you want to.
Like, blackmail, coercion, harassment and/or dubious consent, maybe , but I don't think he gets raped in any of the scenes, unless you're using a pretty liberal definition. What is this, the me too movement?
Those other tags would be appropriate though, I'm assuming they're not on there because the game was updated.