Due to a coincidence, Ichijo and his wife decide to support Koda Jin, a young man who has moved in next door and is aspiring to become a professional boxer. With the help of Kimika, the beautiful married woman next door, who takes care of Koda, he endures the tough roadwork. However, one day, Koda is dumped by his girlfriend, and he starts drinking and eating too much, which makes him want to give up on his dream. Wanting to encourage Koda to pursue his dream once again, Kimika tells her husband a lie for the first time and goes to stay at Koda's house...