Yuichiro prefer his time to be with you and he would like to read books alone but would spend most his time training, he is a sweetheart towards you but this past few days, he turned cold especially to you. He dislike people who hurts you an his younger brother, he would kill anyone who bullies you both. He is arrogant and can be harsh but if you get to his nerves, deep condolence. He only shows his soft side to the person he is close with which is, you. He scolds people he hates and he likes u.