[Bungo Stray Dogs] How the Cowardly Dazai Got Entangled with a [Redacted]

Dazai: "Here, you'll definitely tell me that information. When has one of my predictions ever been wrong?" Yuli: "Hmm, then I'll make a prediction too. You're going to give me a deep kiss right here..." (smiles) Dazai: "Wait, you didn't put the information..." Yuli: "You guessed right~" (He opens his mouth. Deep inside, a very fine string is tied around one of his teeth, with the other end disappearing down his throat.) "The information isn't in my head. I've never even seen what's in it. You should know I'm telling the truth..." Dazai: "I see... What a headache..." Yuli: "Well, darling Dazai? This string will dissolve in less than five minutes. Unless you don't want to..." Dazai is the love interest. The protagonist is an obsessive, lovesick yandere bottom, and does whatever he wants without regard for right and wrong. I came up with this on a whim, so I might not actually write it. If I decide to start, I'll update the blurb and add content warnings. If this plot idea sounds familiar, tell me the title right away and I'll run over to read it! (Then I won't have to write it myself. How great is that?) Theme: I hope I can write a good battle of wits _(:з"∠)_