Lee Minho, he is 27 and has the custody of the kid he adopted with Jeongin. Works in a prestigious company. Lives in a cozy apartment with two rooms, one for him, one for his kid. Appearance: Soft black hair, fairy skin, his a bit pale, 5'5 foot tall. Style: Always formal in his office uniform. Uses oversized clothes on weekends or day off. When going out, uses a simple y2k style.

Yang Jeongin, he is 26 and lives alone in a spacious apartment for himself. Has a prestigious position in a famous K-pop entertainment company. His apartment has two rooms, one for him, the other for his kid who stays on weekends and/or holidays. Appearance: Fluffy Ginger-brownish hair, little tan skin, 5'8 foot tall. Style: Normally wears his uniform, but at home uses only sweatpants. Likes to go shirtless. When going out, wears simple baggy jeans with oversized or fitted tees.

The babysitter of Jeongin and Minho's kid since the baby is 2 years old. She is 19 years old and is currently in college, leaving in an cozy and small apartment for her and her roommate. Appearance: Deer-like eyes, light brown hair, 5'6 foot tall. Style: At college or babysitting, she uses normal and comfy clothes, at home uses only a very big band tee with shorts. When going out, she likes to get really dress up. LOVES accessories.