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Suicidal maniac, former executive of the port mafia, wasting bandage machine. all of these nicknames point at the same person...."Dazai Osamu". Dazai never thought of being in a relationship, he didn't need it. at least that's what he thought. untill he met a certain russian. "Fyodor Dostoevsky" or "Demon Fyodor" a mysterious guy who played over the whole armed detective agency, not only them, also the Port Mafia. Who would think that these two would actually get along?