[Crossover] He Became the Light

Question: What kind of city is Yokohama? Yuan Chubai: Thanks for asking. I'm on the train, just arrived at the station, and the kidnappers are already about to tear up my ticket. Yuan Chubai never imagined that after fleeing the country and setting foot in Yokohama again years later, the first to welcome him would be a ferocious kidnapper with a gun pointed at his forehead. Most importantly, the kidnapper was a pervert. He stole Yuan Chubai's phone and wanted to call his partner. Yuan Chubai: That's not my partner, that's my ex. I advise you not to call, or else neither of us... The kidnapper stubbornly went ahead and made the call, smoothly correcting himself along the way: Your partner... no, your ex is in my hands right now. Let me tell you... Boom! With a deafening crash, orange hair whipped in the wind. The newcomer clutched a phone in his palm, his eyes, visible beneath the brim of his hat, as cold as ice. Countless cracks spread across the hard floor beneath him, splitting it apart inch by inch. "Say that again. Who's in your hands?" Yuan Chubai: ...or neither of us will make it out alive. In the archives of the Armed Detective Agency, there was a file buried deep out of sight. Codename: S. Name: Yuan Chubai. Ability: The One Abandoned by the Gods. Threat level: --. "Reason has no place in the mind of a madman." "I am the world's castoff, born to die." "Please love me. Please hate me." Instructions for use: 1. Mainly a self-indulgent story with a male lead in the bottom role. Updates whenever I feel like it, written for love. 2. The main plot follows Bungo Stray Dogs. Other characters only appear briefly. Frequent out-of-character moments, canon characters may disappear, serious tone. 3. CP: Nakahara Chuuya. Core theme: I love you, in life and in death. I want you to be well.