as i understand, alphas can go into a heat similar to omegas but with an opposite side effect. it looked rape to us OFC but that's how an affected alpha looked when they had their minds muddled up by the pheromones. more so in this manga because they are a "destined match" if you have read destiny, when the pair met, their baser instict draw them to each other. and if you notice, even when the uke/omega sempai says no, his body (and at some degree, his heart) wanted it so much because of the soul mate thing.
read hebi no seikatsu if you haven't yet even the nicest alpha ever will go ballistic and "devour" an omega in heat once they got affected.
Sorry, but you obviously haven't been reading THIS story since obviously the Alpha doesn't CARE that he just raped the guy, because, yes, it's rape whether or NOT the omega 'WANTED' it OR the alpha 'meant' to do it. Rape occurs because it harms victims so OBVIOUSLY it does NOT occur ONLY because rapists are bad. And, BTW, there have been manga where the Alpha has been able to prevent themselves from raping the Omega who's in heat, so if we use your 'logic' the OP point was proven and not yours, yet again. SVFSN. KTBN.
**rolls eyes. stop being triggered. i'm not saying it's not rape. i'm saying this is the grey area of omegaverse and that heat and destiny's baser instinct is a factor. he thinks what he is doing is normal because it's what his body and instinct wanted to do, as the destined match. alphas who could control themselves are a rare occurrence, like the 2nd seme of abarenbo honey. it's too early to judge the seme from that few panels we have seen and here you people are crucifying him immediately. bocchamas normally acts this way. i say let the next chapters roll first and see who he is really. it can go downhill or it can get better but let's not immediately judge him. if they were not an alphaxomega+fated pair, this incident will not even happen. (omegas don't go randomly flash pheromones like that unless it's the fated alpha) and it's not like he'd just randomly rape him because of bad intentions. i will not defend him, he's definitely done something bad but IMO omegaverse system is more to blame with this. It's already crappy the way it is but this manga, compare to others is has quite a good start and I don't want to see it spoiled by the hate train. Something similar happened to yomamushi danshi.
I will never forgive sensei if the Alpha will somehow be romatically involved with our Omega boy. That alpha seems to look down on omegas and Betas, raped someone and doesn't feel bad. Even if he might turn out better, no! never shall i allow it （/TДT)/