Delivery health is Jun's only source of enjoyment. When he calls for a delivery health girl named Miyabi, who resembles his homeroom teacher Rin, whom he had a crush on in his school days, the person who shows up is none other than Rin herself. Though Jun is surprised, there's no way he's just going to replace the woman of his dreams who has appeared before him... Their passionate tongues entangle, the stimulation that penetrates his penis, the dreamlike moment, Jun can't resist ejaculating just once, and asks for an extension. When his family finds out, Rin considers quitting delivery health, but his body is throbbing with rage.