A man who has given up on life and a woman who lives with her late sister's child. Two people who were destined to meet. Yosuke spent his childhood under heartless parents and eventually became all alone in the world. At his lowest point, he met Natsuki, who was living with his late sister's child, Kenji. But then... those sunny days suddenly slipped away. ...Leaving behind Yosuke and Kenji, who have identical ears.