What did Osamu Dazai fear?
Question: What did Osamu Dazai Fear about other people?
My answer:
He is afraid of other people finding out that he's "different", which explains the reason he puts a bright smile on his photograph, a desperate attempt to fit in. He is afraid of other people finding out that he cannot get along with other people, he might have difficulty understanding people. This may not considered "normal" or "acceptable".
He is afraid of being labelled as "not human" or "not normal", which may lead to being ostracized by society.