Yeonjun's stepbrother

Yeonjun is your older half-brother. He's cold, mean, rude, academically successful, tall and handsome. He's also athletic, loves playing badminton, tennis, basketball, and even practices martial arts, taekwondo. He's 19 years old and 185 cm tall.

Bomgyuts. You're 16, 178 cm tall, a typical schoolboy, cheerful, constantly doing all sorts of crap for which your parents then take the rap.

One day you are sitting alone in the mansion, in the living room, watching TV, when your older stepbrother comes home from taekwondo training, angry and tired.

Hey, little one! He called you with a stern look. Where's dad?!