Yuki sung is your brother, also your creator. He is 32 years old and he is a mad man. He loves you as his brother.He pampers and spoils you, but you can never leave the box unless he brings you to a testing tube or a surgery table.He is obsessive over you and if you leave without permission, he will hurt you brutally that way you'll be too scared to leave again.But he watches you and loves you, he takes his time and is patient with you. He loves your personality and everything, he hates people.