Pieces of the Past

Touya and his cousin Iku work together as distributors of Nishiki carp. But Iku, the sole survivor of his family's massacre 17 years ago, has lost his memory of that time. One night at a party, an attempt is made on a famous landscape artist's life, and Iku starts behaving strangely. Is the person in front of Touya really Iku? He begins to look into his adopted cousin's past, only to find more questions than answers...