At Asung High, Yoon-soo’s new workplace, she gives a tricky question for students who want to join the math club. While no one in the class got the question ... read more
Yoon-soo finds out that Seung-yoo solved the question. But he tries to keep a distance from her, saying he doesn’t like math. Yoon-soo gives him another math... read more
Seung-yoo participates in the math competition and is picked to represent Asung High along with Ye-rin. The result shocks everyone who thought Seung-yoo had ... read more
Seung-yoo and Ye-rin prepare in earnest for the Math Olympics. Jung-ah and Min-joon teach Ye-rin the means to win, and Yoon-soo finds out about the corruptio... read more
After the Math Olympics, Seung-yoo opens up and tells Yoon-soo the traumatic experience he had bottled up inside of him for a long time. Yoon-soo comforts hi... read more
Yoon-soo gets overwhelmed with mixed and complex emotions after hearing Seung-yoo profess his love for her. Kyu-young notices Seung-yoo's love for Yoon-soo a... read more
After four years, Seung-yoo has now become a renowned mathematician, and he returns to look for traces of Yoon-soo who has disappeared after the incident in ... read more
Now that he has reunited with Yoon-soo, Seung-yoo tries to get close to her again. Noh Jung-ah, who doesn't know that Yoon-soo has become an elite instructor... read more
Seung-yoo tries to bring Yoon-soo out into the world from her rut by getting close to her heart, just the way she helped him. Meanwhile, Yoon-soo keeps her i... read more
For the first time, Yoon-soo reveals to Seung-yoo her pain and suffering. Seung-yoo discovers the person behind their love scandal and proposes they stand to... read more
Yoon-soo starts to smile little by little thanks to Seung-yoo, and the two of them have an enjoyable and memorable time together. Meanwhile, Noh Jung-ah, who... read more
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-soo ... read more
Seung-yoo understands the error in the premise and Yoon-soo deeply. He becomes frustrated because his love for Yoon-soo obstructs any means of proving Yoon-s... read more
Seung-yoo and Yoon-soo finally reveal the truth behind the scandal that happened in their past. While Noh Jung-ah puts forward a scapegoat after getting corn... read more
Yoon-soo and Seung-yoo hold hands for Si-an, supporting, relying on, and moving together. In the end, they get close to exposing that Si-an's condition was t... read more
Finally, Seung-yoo and Yoon-soo reveal the secrets behind Asung Academy and Noh Jung-ah to the world. How will Noh Jung-ah's defeat look? What will become of... read more