Detective Conan: Who Can I Save?

[No romance, just friendship. But feel free to ship characters yourselves. Yuko may consider writing extra chapters.] This story brings together Jujutsu Kaisen, Bungo Stray Dogs, and Detective Conan. Detective Conan is the main setting, and characters from the other worlds appear less often. The protagonist is also a native of this world, not someone who transmigrated. The protagonist was originally an experimental subject for the Organization, but through his smooth talking, he ended up becoming the Boss's adopted son and the distillery's pampered Fenji. Three years ago, he returned to Yokohama and made off with the "Book" there, setting out on a path of saving others. Three years later, with everything over, the Boss summons him back to Tokyo, and the story officially begins. He hears there are lots of undercover agents in the Organization, which suits Wu Zhe just fine. After all, who would suspect that the Boss's most beloved adopted son wants to kill him? Just as he's about to finish everything and leave, the people he once saved all gather around him. A certain rescued man with a half-up bun: "Thank you for helping me fulfill my wish." A certain rescued young man with red hair: "Want to grab a drink together? Dazai and the others are coming too." A certain rescued blue-eyed undercover agent: "Xiao Zhe, could you take better care of yourself? You keep acting like your life doesn't matter. Of course we're worried about you." Wu Zhe: "Don't come any closer! I just wanted to save people and then die. Is that really such a big deal?" Wu Zhe kicked everyone else's bentos away, but he couldn't save himself...