After the Boss Dazai Jumped Off a Building

I, Dazai Osamu. For years, I worked day and night to save my friend. After countless hardships, I finally managed to protect this one world where he was still writing novels and still alive. My life is so hard. So I entrusted the Book to Yokohama's new Double Black, Nakajima Atsushi and Akutagawa Ryunosuke. I even managed to get a happy ending. At last, I put a perfect full stop on my own story, too. After that, I came to a new world. Here, I was together with the slug. Unable to accept this cruel reality, I promptly killed myself and stirred up trouble. Then I ended up in the Taisho era, where people hunt demons... ??? Why does this world have a book by Oda Sakunosuke? The book I spent my whole life without ever seeing, and I got my hands on it so easily! What? Someone's trying to take Oda's book from me, and they're badmouthing Oda, too. Heh. Let me, Dazai Osamu, teach you how to behave! Theme: Technology changes lives; knowledge is power