My name is "Yuu," and my parents wanted a brave and strong son. My twin sister, "Ai," on the other hand, was raised to embody kindness and love as a girl. However, fate had other plans as our parents' hopes were inadvertently reversed. Despite this twist of fate, Ai and I stood by each other's side and fought to protect one another. We decided to play a game of switching roles to find our true happiness. This is the story of two brave twins who risked everything for each other and themselves.