Kyonyû mizugi mibôjin: Nôsatsu jukujo no himitsu no chitai

Original title: 巨乳水着未亡人 悩殺熟女の秘密の痴態

Kimika, a widow burdened with debt, earns a high salary working as a housekeeper in a swimsuit at a mansion. However, the mansion is also the home of Nakamura, a pool cleaner who runs a pool prostitution business...