The delivery girl Yukine had an indisputably good look, but she was blunt and a 'maguro' (unresponsive) worker. Angered by Yukine's cold service, a man decides to get revenge and calls her again. He succeeds in secretly slipping her an aphrodisiac called “突起王” that makes only the nipples sensitive. With the drug making her nipples oversensitive, they are kneaded and toyed with, and Yukine repeatedly collapses into orgasms — she becomes enthralled by nipple‑orgasm sex to the point of requesting the man back as her client.
