We're way too early in the game to even ponder if redemption (and what kind of redemption) is possible or not. The cycles seem to be supernatural in essence, and if by ending them, Akira and everyone else gets thrown back to its start - then he really has done nothing that would constitute as a crime in the real world, other than the Maya situation.
And the Maya situation is yet another thing we don't have enough context about. Or even to which extent Maya was a normal girl (not supernatural).
I don't agree that we can compare Akira's journey to any real world example yet because we lack context to even what's happening. It could all be fake, a simulation, a list of things. For myself, I'm withholding any judgement in that regard until the end of the story.
Edit: there's also another point that I find interesting to think about. If Sekai had left Nozomu as Akira became an adult, married him and had a normal life raising Ami with him from there onwards. Would we demand for her to be sent to jail 10 years after the fact? I don't know. If that happened to Maya and Akira as the game ended, would we not accept it? I don't know either. We'll find out eventually.
I mean you kinda can. Maybe for stuff where he blacks out, he can be held less accountable for, but 90% of why he's even there in the first place is entirely his fault.
You know, personally if you knew that for some reason you couldn't control yourself around young girls, maybe going on dates with them, or hanging out alone with them, or not seeking help, are all things you can control? At least for me, the basic amount of human empathy would make the choice pretty clear between not getting "affection" versus potentially ruining the life of another person, much less a child.
I also don't really understand why people set the bar so low for this dude either? Reminds me of all the isekais where it's like "wow, the MC is such a great person for not abusing the slave they bought." Like, no? It's basic human decency to not take advantage of people? Just like how the bar of "wow, you didn't abuse this child" that people assign to the MC is quite possibly the lowest fucking bar I've ever heard of?
And yes, the "it was all a dream" angle is a possibility for redemption, but I didn't count it as Sel said he would shoot himself if he wrote such a cop-out lol.