Rui had bags under his eyes from lack of sleep and possibly frequent tears. He was not accepted in society and his parents tried to help him as much as they could, but could not transfer him to another school .. and he himself did not want to, looking at Tsukas, know that he has no chance of being with such a kind, positive and sweet person nearby. Rui often showed indifference and hid from other people's eyes, spending all his free time at school on the school roof, doing robotics.