Joo Ye-rin

Follows Ji-woo, an outcast in a prestigious private high school who meets Hak-sung, the school's security guard, and asks him to teach him math and become friends, but their friendship is at risk after an incident in school.

Seong-jin, a conductor, and Su-yeon, a cellist, are engaged. Su-yeon disappears, leaving a video. Mi-joo replaces Su-yeon and develops a secret relationship with Seong-jin. They feel watched as their bond deepens.

A police detective and husband take revenge on a serial killer.

Yoo-Suk (Ju-hyuk Kim) looks for a girlfriend who disappeared. Ae-Yeon (Yun-ji Lee) has a fake diamond which her ex-boyfriend gave to her. Ae-Yeon was dumped by her ex boyfriend. Byung-Chan (Kong Hyung-Jin) does not believe in love...