The math teacher who got fired because of Jae In uncovering the truth tries to retaliate. An appears at the right moment to save Jae In and he continues to stay with her to protect her. However, the secret Jae In wanted to hide from everyone has been revealed and she disappears.
Elenco: Park Jin-young , Shin Ye Eun , Kim Dasom , Kim Kwon , Cho Byeong-kyu .