Tatsuya was enjoying his long-awaited single life while his wife was visiting her family during her pregnancy. However, after just one week of living alone, he began to feel lonely and longed for human contact... His sister-in-law, Tsubasa, came to help with the housework. Tatsuya happily welcomed her unexpected visit. However, Tsubasa's real intention was to relieve her sexual frustration with Tatsuya while his wife was away. Unaware of her scheme, Tatsuya leisurely soaked in the bathtub... when Tsubasa entered...
