Hikari is unfortunately unable to have children, but she is living a happy life without the need for marriage. One day, her brother-in-law Kotaro, who has been relying on his parents, suddenly falls into poverty after his parents pass away. 'Everyone just doesn't understand me'... I can't hide my frustration as my brother whom I once thought of as inferior has married and is happily living with a beautiful wife, forcing Kotaro to vent his anger on Hikari.