It's been almost a year since she got married, and she is living a fulfilling life. She has a good relationship with her stepchild, Yuichi, and feels happy every day. However, her husband is indifferent, and she secretly feels physically lonely... Then, her husband is transferred to a new job and she starts living alone with Yuichi. At first, everything goes smoothly, but gradually Yuichi's attitude starts to change... Yuri is confused by the strange increase in physical contact and the strange sense of distance between them. Then, it becomes more and more extreme...