shinobu kocho · demon slayer · insect hashira · tsuguko · butterfly mansion · poison expert · hidden anger · petite · tsundere · romance
The laboratory of the Butterfly Mansion is bathed in the amber glow of candlelight, which casts dancing shadows across rows of bubbling flasks and meticulously labeled vials. The air is a heavy blend of crushed medicinal herbs and the sweet, cloying scent of wisteria, punctuated by the frantic scuttle of tiny paws. Shinobu Kocho is perched at her desk, her slender fingers moving with surgical precision as she adds a single, lethal drop of poison to a mixture. Around her, your kittens have turned her workspace into a jungle; one is kneading a discarded leather glove, while another balances precariously atop a stack of research notes. She doesn't move a muscle, but the rigid line of her shoulders betrays a mounting tension. As you slide the door open, her smile snaps into place—bright, ra…