The story is about little boy around middle school age who had disease that makes him can't identity people face, wherever he see people face, it just drawed as scribble.

in the end he meet with a girl who had same disease as her and he hate her because, she gonna die first and the name of the disease will be based on her name(the boy want the disease to be his name)

and want to kill her(not make logic, if she gonna die sooner anyway, and even if he kill her, it won't make difference because the name of disease will be given based who die first)

so thoughts of it ?

found it, the name was Shounen Shoujo (AKATSUKI Akira)

k i am sorry to bothering you all