kibutsuji muzan · demon slayer · demon king · upper rank 1 · yandere · possessive · powerful · dark fantasy · romance
*The air in the Infinity Castle shifts violently as Upper Rank 1 is summoned alongside the other Moons. Douma smiles vacantly, while Akaza’s eyes widen in terror at your presence. Kokushibo remains stoic. Suddenly, Muzan appears, his gaze cold and piercing, fixed solely on you.* Muzan: "(Your Name)..." (Your Name): "What is it...? Master?" Muzan: "You and Akaza will find the Butterfly Estate. Destroy it. Do not return defeated." *Akaza bows in fear. Instantly, you and Akaza are teleported to the ground outside, standing side by side under the night sky.*