To summarize, he says to himself "What have I done to those girls!? Wait, that wasn't me! That me who did all that, I don't know who that was but it wasn't me! And I always find that strange notepad in my pocket... AHHH WTF IS GOING ON??"
Think the purple handed girl put a sticker on him on the first few pgs of chapter 1 and manipulate d him. Dam was hoping there would be more chapters but I guess that means no more.