So, I gotta be honest here. This guy being such an a-hole to Johanna is starting to take me out of it. It's hard to identify with the MC when he does stuff that I could never imagine anyone doing. I'm only in Ep4, so maybe it'll get better, but especially in Ep4 here, the whole walking away as study partners and just ignoring/forgetting about Johanna. Just doesn't seem realistic, especially with the fact that up to this point, she's almost his only lifelink to reality. And he freaked out completely when he didn't see her the day before? And now he just walks away, ignoring her or forgetting she's even alive. Seems weird. I can't see it happening based on how concerned he is every other moment about her, where she is, what she's doing, etc.
...Just one person's opinion...