One day, college student Miyu learns from her mother that she has a half-brother. She divorced when Miyu was young, but her father married another woman, but disappeared after she gave birth. And she said that her father died the other day, and she wanted to take him in and raise him without relatives. Then her younger brother Yuya came to her house, but Miyu couldn't get used to her new environment, probably because she had been raised in a male household, and couldn't wait to see how she was doing. I try to let her gently touch my chest, but...
