Never tell your husband that you got pregnant after being fucked by your father-in-law. (Washimi Sumire JUQ-164)

Sumire, a daughter-in-law facing pressure to have a child, is approached by her father-in-law who proposes a family trip to a hot spring. However, her mother-in-law orders them to abstain from sex for a month before the trip to ensure they have a baby. On the day of the trip, her husband absurdly refuses to have sex, and her father-in-law is also refused. The couple, both experiencing excessive sexual desire, go to the hot spring to relieve their physical discomfort. There, they happen to see Sumire bathing…