The Ueshima family lost their husband and sank into darkness. However, her daughter began dating Mitsuko's grandson, and thanks to him, the family is returning to the brightness it once had. Mitsuko feels relieved that her daughter and grandson get along so well, but she accidentally witnesses their activities. Although Mitsuko thinks she shouldn't look into it, her lower body aches, and she has managed to hide her fingers. After some time, her grandson seems to fail at work and becomes frustrated. Mitsuko hugs her grandson and tries to comfort and support him. However, when the grandson holds Mitsuko's hand, he gradually moves to her lower half. Mitsuko is surprised by his hardness, but she accepts him because he doesn’t have a daughter...