I had to stay at my brother's house because I was on a business trip for several months to the area where my brother lived due to work.Her older brother's wife, Rieko, was a gentle woman and I liked her.However, I was nervous because we only met a few times a year.However, due to the shift, the day and night are reversed, so inevitably I often talk to my sister-in-law Rieko.I'm not the type to talk much, so I mostly listened to what Rieko had to say.I heard recent stories, neighborhood things, and complaints about her brother.Occasionally, the story of his life with his brother popped up, and I wondered if he wasn't satisfied.One day, when I got home on the last train because of the late-night shift, I saw Rieko-san groaning in her pitch-black room.She said she shouldn't see this and tried to go to her room, but her girlfriend, Rieko-san, found her, and the atmosphere became awkward.After that, Rieko came to my room.I told her I would keep it a secret, and she got upset.I wonder if she was confused by Rieko-san.When I slowly put her lips together, her reasoning that I had endured until now burst out, and I was looking for her again and again until her morning.