She is the senior class president as well as now being the president of the student council. She is hardworking, studious, performs well and is also popular. She appears to have liked Jin-Ho ever since the freshmen year of high school, when he helped her make origami flowers. He does not feel the same way towards her, though at one point he does suddenly notice that she is attractive.
A Korean gangster and the true mastermind behind most of the gang's more underhanded actions. Originally the boss of the gang, he passed leadership over to Ken as he realized his potential and charisma. He serves as Ken's right hand man, and has numerous underground connections and is in charge of handling the day-to-day business of the gang. He can be seen as the real evil behind the gang and is often doing dirty works for the gang, but his loyalty to Ken is unquestionable. He took over the gang after his father was killed. He was later he put coma by Ban-Phuong's men (Source: Wikipedia)
Hui-Soo is a rich 16 year old boy who picks Soran to be a fake bride for his brother. Later he falls in love with her
Soo-bin is the rockstar/singer among the guys. His attractiveness is similar to Ji-hoo. Soo-bin starts off as Jae-yoo's companion in the new home, and in contrast to Ji-hoo (even though they are good friends), he's tame and willing to talk to her. He tells her that Ji-hoo is a good person once you get to know him. He also starts to like Jae-Yoo. Even after he found that Ji-Hoo and Jae-Yoo became couple, he doesn't give up and continues trying to make Jae-Yoo his. (Wikipedia)
A "trace" with very strong arms. He was recruited by the organization Hanjo.