[Comprehensive] About the Fact That the Brother of the Mackerel Is a Slug

"Book": Young Dazai, what is your wish? Dazai: I want to die eternally. "Book": If you can't do this, please try another one. Dazai: ... Then let Slug sever the brotherhood with me. "Book": ... Let's find a way to make you die eternally. … … "Book": Young Chuuya, what is your wish? Chuuya: Tell Dazai to stop looking for death. "Book": No, please change it. Chuuya: Then let Dazai admit that I am his brother. "Book": Are you thinking... No, it's nothing. Let's think about how to stop Dazai from looking for death. Concept: In fact, Zhongya is the younger brother