[Crossover] Why Are They Nothing Like I Imagined?

[The protagonist is Wenlian Cherry Blossom Dazai, and he's super cute!!!] [Pairing undecided] Blurb 1: After Cherry Blossom Dazai and the literary greats saved the world together, he finally left that library. He couldn't resist a sudden flyer: [Want to raise a young Akutagawa-sensei?] [Want to see the real-world version of yourself?] [Want to see works by Akutagawa-sensei you've never read before?] So he set out for Yokohama on his own. Only after arriving in Yokohama did he discover that the flyer had been false advertising. The Akutagawa here was nothing like his Akutagawa-sensei. The literary greats had all traded writing for fighting, and Oda Sakunosuke was the only one still writing, but he was a master of going on hiatus. And his counterpart here was a completely different kind of black-hearted mess. Blurb 2: A mysterious stranger suddenly arrived in Yokohama. He knew an astonishing amount about everyone's abilities, but always looked at them with an expression of utter disbelief. He had an incredibly powerful ability and could always name everyone's preferences with perfect accuracy. Theme: Children should be taught from a young age