Due to a tragic accident, Banri Tada is struck with amnesia, dissolving the memories of his hometown and past. However, after befriending Mitsuo Yanagisawa, he decides to move on and begin a new life at law school in Tokyo. But just as he is beginning to adjust to his college life, the beautiful Kouko Kaga dramatically barges into Banri's life, and their chance meeting marks the beginning of an unforgettable year.