A story about a pair of twins, a pair of nonsensical parents. When their parents discover that their daughters have suddenly turned into a pair of boy twins, will any of those ridiculous things happen? As time goes by, what changes will happen to the brothers who gradually grow up? The love between a pair of twins. The younger brother often protects the seemingly weak older brother. What makes them separate and live their own lives? Will those people appear around the brother who left his younger brother? ~~`