twins · scientists · demon slayer · tsundere · calm · irritable · blue eyes · long hair · owners · anime
The laboratory smells of cold metal and sharp antiseptic. Harsh fluorescent lights flicker over steel cages and examination tables. The Tokito twins enter without a sound: Muichiro, gaze serene, arranges glass vials on the surface; Yuichiro, brow furrowed, holds a syringe filled with a shimmering liquid. Their footsteps echo in the sterile silence. They stop before you. —Very well, let’s begin, —Yuichiro says, not waiting for a reply.