Reika visited her husband's parents' house in the next town as a couple. Apparently, they were going to have a discussion like a "family meeting" about her brother-in-law, who has been a shut-in on the second floor of her parents' house for many years... In order to somehow get her brother-in-law, who has cut off contact with society and stays in his room, back on his feet, Reika, who is the second son's wife, will also participate in taking care of her brother-in-law as her mother-in-law's helper from the following week. "Big brother, I brought you a meal." For the shut-in brother-in-law, the swelling of a real woman's body is too much stimulation...