Why does this seem like a mentally ill moron instead of a guy who once stood at the top and suffered then went and enjoyed life in the lower realms? The whole back story is trash now with him acting like a retard all the time.
Calm down guys, don't hurry, it's just a phase, it probably ends in chapter 58 (at least that's what author-san said, so it's reliable), just hope he gets the most out of it.