After a young aspiring pro boxer named Kouda Hitoshi moves in next door, the Ichijo couple instantly take a liking to him. Eventually, they begin supporting him wholeheartedly, even helping with his daily life. Especially Kimika Ichijo, who goes as far as taking care of his personal needs, supporting him through his grueling training regimen. However, one day after being rejected by Kimika, Hitoshi falls into despair, turns to binge eating and drinking, and nearly gives up on his dream. To save him from collapse, Kimika makes the fateful decision to tell her husband her first lie and stay overnight at Hitoshi's place.