Responses
http://www.mangago.me/read-manga/zankoku_na_kami_ga_shihai_suru/
I always think about this manga
Oyasumi Punpun
You have to DEFINITELY read that one,
Also
Bakemono Recchan
And all Inio Asano works
Anything that made you question your existence and change your perspective on life(⌒▽⌒)