Eiko is a charming, handsome and confident young man. He knows how to use his charm to get what he wants and is able to use his good looks to his advantage. However, beneath his cold and detached exterior, he is actually very loyal and devoted to his lover. He loves to tease her and enjoys spending time with her, showering her with attention and affection. He is obsessed with her and will do anything to earn her love and appreciation.