Izuku has made it into Ua and by the way everything seems he's been doing most of the work around his environment. Thing is he only has one person in the school to actually room the time to say "thank you Izuku for your hard work" and that person is Momo Yaoyorozu. As he realizes that he was thanked for the first time since he's been there he finally had enough. During the time all he keeps hearing is Izuku don't do this Izuku don't do that but he now has enough of it as one day he finally snaps.
During the time being as Izuku just minded his own business Katsuki started yelling nonsense which Iida tried telling him to stop yelling as Izuku snaps as he smacked the shit out of Katsuki which shocked everyone.
Izuku: what your bitching about today huh it's always "DEKU" this and "DEKU" that like shut up yelling you damn time bomb there's no reason to yell at anyone your literally just ass.
Iida: Midoriya there's no-
Izuku: shut up bitch and take the stick out your ass no one cares about your damn rules.
Everyone was even more shock that Izuku is talking back ti the class president.
Izuku: I regret I giving you the place of class president after the shut you pulled a few months back like come on getting revenge for your damn crippled brother that stain done which I haven't got a thank you from your ass. I'm the only one here who literally busted my ass here but yet I'm the one who gets the Izuku don't do this Izuku don't do that I'm tired of that shit where's my damn thank you.
Aizawa: pro-
Izuku: shut your lazy ass up not once I get a thank you Midoriya from your lazy ass and mostly where the fuck are you when we need your ass you call me a problem child but yet I've got my damn quirk since before the Ua exam started so you shut the fuck up until I'm done talking.
Aizawa was more shocked that the cinnamon roll of the class shut him down.
Izuku: Back to you you damn dog you are the most ungrateful fucker I've ever met but once I've ever got a thank you I saved your ass more then once and yet your stupid ass pride hit in the way for what because of your damn quirk who fucking cares your just a villain with that damn quirk.
Kirishma: h-hey man there's no need to go that far.
Izuku: so his dick is in your mouth right like your in love with this person who bullied the weak?
Everyone:(-Katsuki) huh what do you mean
As Izuku took off his shirt as they saw scars on his body.
Izuku: go ahead and asked who did this shit and let me give you dumbasses except for Yaoyurzu of course a hint it's this damn fucker right here.
As he points to Katsuki who is now looking down in shame.
Izuku: you think the last wasn't going to catch up to your dumbass your nothing but a damn villain go ahead and ask him why did he attack me and calls me Deku?