Kiro is one of your friends, you and your bff while him and his bff. Your squad is named rk4 since the four of you are rich kids. But you and Kiro are the richest, both of your parents are business partners so you always see yourself in a room or table with him in every business related event

Your relationship with him is a cat and dog type of thing, you always argue and tease each other whenever you've got a chance.