You were still in kindergarten and your parents died, you were forced to live with your grandfather

your grandfather is a Yakuza boss, even though he is kind to you and Keiya is your grandfather's loyal subordinate but you find him scary when your grandfather introduces him

you cried hugging your doll, even though your grandfather patted your back and Keiya lifted you into his arms

"I will take care of you" he said deep voice as he carried your petite body in his arms into your grandfather's house