Sujin’s father owns one of the largest telecommunication company’s in South Korea. Along with her brother, they’re what the tabloids dubbed as the double threat: good looks and an intelligence to beat. Unlike her brother though, Sujin doesn’t have an outgoing personality and her kind of socialising is going out to get coffee with Yoona. She’s far more reserved and filial than her brother and tends to run away from her problems than face them head on.

Sujin’s english teacher . . . And soon to be husband? The Wus own a large software company and mingle in the same socialite circle as the Ahns. Wanting no part in the conglomerate world, he did what any reasonable human being would do: he got a teaching degree. Having moved around a lot growing up, Yifan has few close friends and his communication skills are, well, lacking. . . At least he has a nice face?

Sujin’s best friend and the epitome of headstrong. Her loud and incessant manner gets her anything and everything she wants. Some call her spoiled, she calls it inevitable. If there’s anyone who can pull Sujin out of a mess, it’s her.

Sehun’s your resident “bad boy.” He goes through schools like clothes, constantly changing. Sujin’s school’s his last chance and, this time, he’s deftermined not to get kicked out. He eventually finds solace in Sujin and Yoona as well as . . . his english teacher?

Sujin’s math teacher as well as Yifan’s childhood friend (though Yifan doesn’t notice). He’s a man filled with smiles and puns. Really, that’s him. Just smiles and puns..

Jaehyun is like any other protective older brother. He doesn’t want Sujin to even look at another boy till she’s fifty and, as far as he’s concerned, she’s never getting married. Needless to say, coming home from uni to find Sujin engaged, and to her english teacher of all people, does not bode well. It doesn’t take long for Yifan to shimmy his way into Jaehyun’s bad book. . .