Yoon Su finds out that Seung Yoo solved the question. But he tries to keep a distance from her, saying he doesn’t like math. Yoon Su gives him another math…

Seung Yoo announces that he was the student involved in the teacher-student love scandal at Asung High and shocks everyone that it was all a setup. Yoon Su doesn’t want…

After four years, Seung Yoo has now become a renowned mathematician, and he returns to look for traces of Yoon Su who has disappeared after the incident in 2017. Meanwhile,…