Cho Kyuhyun

Cool guy and also very loving game. But his life changed after he broke up with Seohyun, until he met Yoona.

Im Yoona

Ordinary girl who first lived in Seoul and also attended SM High School. Always fight with Kyuhyun. Falling in love with Donghae, until in the end she know Donghae just trick on her.

Lee Donghae

Kyuhyun's friend, a playboy. He met Yoona and intend to trick on her, as he usually did on another girl. But his feelings changed after he parting with Yoona.

Seohyun

Kyuhyun's ex-girlfriend. Nice and beautiful girl who loved Kyuhyun. He parting with Kyuhyun for no apparent reason.

Victoria

Queen's campus. Want Kyuhyun to be her boyfriend.