In yesterday's episode of High Kick 3, Sujeong (f(x) Krystal) got pissed off at Kang Seungyoon who made a new girlfriend. In this episode, Kang Seungyoon bought his new girlfriend expensive clothes and took her to nice restaurants, which made Krystal jealous.

Nonetheless, Krystal helped Kang Seungyoon to learn Enlish for his English speaking girlfriend. Later, Kang Seungyoon found out that the new girl was just taking advantage of him and went into despair. Then Krystal took revenge on his ex-girlfriend by choking her neck on the street. This epsode suggested a subtle change of Krystal's mind, which has the viewers anticipate the start of  a  romance between the two.