After losing her husband, Chisato Shoda was persuaded by her concerned daughter to move in with her daughter's couple. However, the relationship between the daughter and her husband gradually turned cold, and their intimate life became infrequent. One day, the son-in-law finds himself alone with Chisato. Showing his emotional vulnerability, he seeks comfort from her. As she gently holds him, he becomes increasingly aroused and begins groping her breasts. Though Chisato says "No, we shouldn't," she finds her heart swayed by his warmth...