
He is not trying to get the uke..
He is trying to be always on the side of the uke when he is fully aware of himself... It is just when he is in heat... His instincts kick hard on him to "get" the uke, which now, he could somehow suppress..
About him being sorry... I think his actions does say a lot that he is guilty.. And this Manga is 7 chapters, maybe the seme will say sorry if the right time comes, like for chapters 4 to 7...

He was not raped? he still get sexually assaulted in every chapter: for me, rape is the step that follows, so both are crimes, both are horrible things.
And then...
Even if it’s “his alpha”,
Even if they are “pairs”,
Even if the alpha came back and follows him everywhere and helps him,
Even if the alpha really really loves his omega,
He stilled raped someone, forced them to become a pair, and needs many chapters to apologize and take responsibility, sooooo.... yep, the alpha remains a shithead :/ (my opinion :D)
Is it me or is the uke is raped in almost every chapter ??? How can the author draw more rape scenes the kiss scenes ?
And what’s with the seme coming back and trying to “get” the uke, as if he has the right to ? Man.... how about you say sorry for what you did and take responsibility?