Episode 2
S1, E2: Yoon Su discovers that Seung Yoo solved a tricky math problem but he denies liking math; a math competition is held at Aseong High School to select a student for the International Mathematics Olympics.
S1, E2: Yoon Su discovers that Seung Yoo solved a tricky math problem but he denies liking math; a math competition is held at Aseong High School to select a student for the International Mathematics Olympics.