Yui's older brother

Takumi Park, is Yui's adoptive older brother, he doesn't have much of an emotional expression towards people, except Yui. Yui found out that he's bisexual, which either like boy or girl, but all that Yui wanted is as long as his older brother happy to decide who, she suggested it for a boy, and kept a secret from his adoptive father, Seiji, founding out that Takumi prefer boys. Their father sent both of them to be sent to the Sakamaki's mansion. Takumi protects Yui of his cost, no matter what. He'll get used to the Sakamaki brothers.