Kotowari Kimi no Kokoro no Koboreta Kakera - 1

MISIRO TSUIN in childhood was saved by a stranger from a mysterious mystical creature from the afterlife, but the boy was wounded in his hands and lost a particle of his soul. Together with his soul, he lost his memory. The responsibility for his upbringing was taken by that mysterious girl named Kazamidori, but soon she was gone, she died in a battle with the next mystical creature, who are called Kotarovy. After admitting to the high school, he meets the classmate Yuigaham Yuki, who is incredibly similar to Kazamidori. This meeting will become fatal for him and will change his life forever ...