W-Rezu Kaikin: Kisei Saki de Suru Kotoganai Giri Shimai no Dorodoro Asedaku Rezubian

It's summertime, and the setting is their husbands' parents' house. With their husbands out on the golf course and their mother-in-law constantly nagging them, stepsisters Riisa and Tsubomi feel adrift and isolated. A different kind of heat begins to build between them, a magnetic pull that draws them closer together. In the Japanese-style room, in the bath, out on the veranda... their beautiful bodies intertwine in passionate, sweaty lesbian sex. It's a secret relationship, a fleeting affair just for the two of them, to last for one summer only.