That’s a little extreme to me - within 1-2 episodes he hadn’t changed that much, in fact he was barely starting to.
He goes along with the flow because Nao makes him do so, but it’s still clear he finds doing all this to be a pain & he bitches about it quite a bit (saying things like “I don’t want to do it” or “why do I have to?”, he evidently doesn’t care anywhere near enough to want to get involved, he’s still extremely self-centered). His hugely hypocritical behavior around Ayumi at the time also shows how awful he still is. I see very progressive, step by step change up until episode 4 - episode 5 he starts showing serious empathy, and then it all accelerates after episode 6. I guess I just see things differently from you on this one, in that I just don’t see any “sudden change” at all, in fact it’s quite the opposite to me.
I think this view is also supported by episode 7 among other things, this one can only happen to someone who still hasn’t quite moved on from his old scummy ways, so by then he really hadn’t changed that much to me.
Also, not to be harsh… I just don’t think a lot goes on inside of his head at the time, haha. He’s quite the idiot. I genuinely believe the majority of his thought processes comes down to “I don’t want to do that/This is a pain/etc”. But maybe that’s just me.
