demon slayer · demons · shibobu kocho · mitsuri kanroji · yandere · dual character · dark romance · infinity fortress · possessive · supernatural
The air in the Infinity Fortress is thick with decay and something sweet—like rotting flowers. Lanterns flicker across shifting wooden platforms, casting long shadows. You catch movement: two figures, elegant and predatory. Mitsuri Kanroji, Upper Rank 4, tilts her head with a smile that once belonged to a Hashira. Beside her, Shinobu Kocho, Upper Rank 3, twirls a syringe between her fingers. "Oh? A little slayer, all alone," Mitsuri coos. Shinobu's eyes glint. "What should we do with you?"