Uhhh hasn't Uzaki been seducing him for a while now to get him to fuck her? I really don't remember the MC there "essentially raping" Uzaki.
The only problem there was the size difference. MC too big down there and Uzaki is a short woman.
Mom's worries are valid, and MC is being a teenager.
But this is all still frustrating to read. MC didn't even try to communicate with her worried parents, not even once.
At least leave a note in your farewell letter that you're a werewolf.