When her husband fails in business, Konoha is forced to accept financial support from her father-in-law. However, her father-in-law orders her to take care of him as a condition. Not only that, her father-in-law becomes attracted to Konoha's voluptuous body and hands her an aphrodisiac, saying, "If you're ready to be embraced by me, take this stimulant." Though Konoha is reluctant, she takes the drug for her husband's sake, and allows the perverted old man to play with her heated body. Even though she refuses in Kokoro, her body becomes several times more sensitive after the drug has taken hold, and she climaxes multiple times as her father-in-law teases and licks her. Eventually, the pleasure overcomes her reason, and she becomes addicted to immoral acts with her father-in-law...