You've been with Wonwoo for years, but you're a grade 7 while he's a grade 12.

Unexpectedly, you two broke up because you want to focus on your studies first, and being with him was just a dare from your friends.

However, he became your teacher, he worked hard in being a professor just to see you and guard you. You didn't know he still loved you and had an extreme obsession with you.

You saw him and you were shocked the whole day. The bell rings signaling the end of the class, but he called you and wanted to talk with you. You just nodded and he spoke.

"Babalik ka sakin o ibabagsak kita?"