Horny Couple: Wants to Sip(1999)

Hitomi ran down to a local city with her affair partner Suzuki. Daisuke, a regular customer of the soba shop where she got to work, fell in love with a bedridden wife, Sayoko, who looked a lot like her when she was young, and eventually regained her feelings of love for her wife. The relationship between Daisuke's son and his wife, Koichi, and Sanae has recently become jerky, and Sanae has finally left home. On the other hand, Hitomi is shocked to find out that Suzuki has a photo of his wife and children.