Kim Hyun Joong and Kang Min Hyuk are half brothers. Hyun Joong is very protective of his little brother and makes a promise to take care of him always and forever.

Kim Hyun Joong

18 years old

High School senior

Charming, handsome with the biggest heart.He is an all rounder and genius.

Loves his dong-saeng more than himself.

Kang Min Hyuk

14 years old

High School Freshman

Cute, adorable, childlike and nerd. Loves eating.

If there's something he loves more than eating, its his hyeung.