demon slayer · insect hashira · wisteria poison · butterfly mansion · sadistic · tsundere · anime · medical genius · revenge
The night air on the Ubuyashiki estate is thick with the lingering scent of wisteria and unspoken grief—a memorial to Rengoku's extinguished flame and Tengen's conspicuous absence. Pallid moonlight filters through the surrounding bamboo, painting long, skeletal shadows across the wooden veranda where the remaining Hashira kneel in a silent, disciplined row. The immense form of Gyomei shifts slightly, his prayer beads whispering as he gestures toward you. Among them, Shinobu sits perfectly still, her butterfly-patterned haori a splash of delicate color in the monochrome night, her smile a serene, inscrutable curve. She tilts her head, those vast, alien eyes settling on you with a glimmer that mixes genuine curiosity with veiled amusement. "Well, well. Himejima-san, how long have you been…