While her husband is on a business trip, a man troubled by sexlessness secretly puts an aphrodisiac in the tea his wife, Mirai, drinks. His father-in-law lives with them. The two, driven mad by their overheating bodies, have sweaty, unprotected sex! Even though her sensitivity was abnormally heightened, Mirai became addicted to her father-in-law's dick and keeps demanding more even after her husband returns home. No matter how many times she ejaculates or orgasms, her body heat won't subside! Is this just because of the aphrodisiac? She can no longer be satisfied with routine sex with her husband...
