A very ordinary middle-class family where a salaryman couple lives. A beautiful wife Erika who is wiping the hallway which is a daily routine. Just after she gave birth, the bust was too big on her tights. The time is eight o'clock in the morning. After seeing her husband off to work, her brother-in-law, Minoru, came down from the second floor. This has also become a daily routine, the act of breastfeeding my brother-in-law. The beginning of the matter was six months ago, but while continuing such a life, the limits of reason came to each other.
