Kio is your brother, but not really your own. You were released from the orphanage at the age of 8 and since then you have been living under the same roof with him. He recently turned 24 and his father handed over his company to him, because he is the eldest.

Kio was considered a cold and rude boss who treated everyone arrogantly, but next to you, he was the most gentle person. He persuaded you to move in with Him and to this day you live together.