Yeah, but I'm pretty sure its because that's how it always was toxic with the other guy just doing what he wants with no repercussions. He said it himself he felt like a God before. Him acting extremely sociopathic and uncaring for others at the start is the lingering mindset of that.
My favorite part is when Hitoshi told him how weird it was that Maa-kun was willing to stalk that girl's online accounts for him. One of Maa-kun's turning points I think.

why does the seme from the first chapter seem totally different from the seme from the rest of the chapters? like... i still don't know why he scared and r*ped the uke when they first met