I agree with your opinion. It was really predictable. Except I was hoping that the main guy dies in the end, maybe sacrifice himself or something.
My biggest issue and some people probably disagree but it is his relationship with that nun.
I feel like his relationship with that nun was really weak. They didn't really feel like lovers or sibling... or even close friends. She is just force to babysit him and the pace was so quick that any bond or any character development felt pretty weak. Maybe in a situation where she was strong, aggressive but also kind and caring that teaches him humanity could've been more elaborated to give purpose to his change and create a stronger bond between the two but they didn't do that.
Also This nun is very aggressive and violent at times she seems crazy and kinda cool due to her driving skills and recklessness but nothing she has done seem too amazing. plus its not like you really see any direct comment from her of being caring. I've no clue why the author feel the need to even want to keep her around.
I think it would've been more interesting to see him change if he hadn't lost his memories.
sorry about my personal opinion being harsh. Please don't reply to my post and try to argue back saying that she is strong and caring etc. I'm not saying she isn't, I'm mainly feeling that she isn't truly needed to make this manga a good one.
I hate this so boring so predictable annoying main character. -_- Sorry no offense but I am getting tired of coincidently reading stupid manga that have to do with someone who either gets stuck in their past, doesn't freaking remember their self, acts like idiots & personality changing a bunch of times. Sorry for being rude please excuse me...
Sigh* stupid manga...