Kousuke Hirahara (also known as "Q-Tip"[1] by Shin-Ae) is the first son of Randulph Skuli Hirahara and Yui Hirahara. He is working as one of the high authority in Hirahara Corporation as his father owns the company as chairman.

Kousuke, at first, seems like a cold and snobbish person but he has a soft side to him when people get to know him. He can be overprotective and caring, especially towards his younger brother Yeong-Gi. However, he can also be condescending and blunt to people he sees as inferior to him, as demonstrated by his first few interactions with Shin-Ae, calling her a "fatass"[2] and insulting her because of her lack of wealth.

He has a tendency to conceal his true emotions. He acts and talks sarcastically but his words often have deeper meanings. He seems to have quite a bit of humor, which is occasionally shown during 'Kousuke's Corner'. He usually has a serious facial expression and Kousuke doesn't like being around girls and has rejected Meg every time she offers to hang out. He gives the excuse of being busy work to avoid dating questions. Kousuke carries a makeup remover to scare the girls away, including Meg. However, he is true to his word and will do what he has promised.