Details: In this reaction, the characters moved back 6 years before the events of the "Stormbringer" ranobe.
Dazai and Chuuya are 16 years old, Akutagawa is 14, Atsushi is 12.
Nobody knows Dostoevsky yet, but he is already preparing to carry out his plan to find the Book.
The agency has already been created.
Dazai does not know Odasaku yet, since according to the events of the novella "The Day I Picked Up Dazai" they met after the events of "Stormbringer".