Actually you can change like that. You won't understand. I have anxiety and I can relate to this Ike a lot. It all started from my childhood. I've always had an anxiety. It just gradually got worse as the years went on.
"You won't understand ?" You don't know ...
Actually me too, I have some "childhood trauma". What I mean was : because the mc remember who he was in the past, he "change back" and became the great person he was when he was little, in just five min, just because he defended the other guy he erased all of his "problems"... It is unrealistic!
True. True. I understand now, bud. :)
Personally, I love this author, but this story is predictable, full of cliché and the drawing got a worse in comparison of the previous works of this author. The ending is rushed, the characters were unrealistic (come on, you can't change like that just because you remember a little of your past) and finally, when it has begun being good the story end... I love pretty much all of this author's mangas but I was really disappointed by this one