As a young boy, Rin was very innocent and in awe of his brother, Sae, wanting nothing more than to become a cool and strong player like him. He started playing football because his brother told him to, following his orders without question. As they played football together, Rin listened to whatever Sae said and adjusted accordingly. When Sae left for Spain, Rin found football was more difficult without his brother but strived to become just like him and replace him.