[Goma Gorilla] Shinobu wa Muchuu (Kimetsu no Yaiba)

A former apothecary, steeped in poison knowledge, is lured by a confident woman with cat ears who offers tea that ignites a dizzying, painful sensation; as he protests and clutches the walls, she dominates him with relentless thrusts, whispering that he now belongs to her, leaving him both terrified and helplessly hooked.