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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 no talent in math except for Ye Rin who knows that Seung Yoo is a math genius. Meanwhile, the parents of other students and Ms. Noh aren’t happy with how Yoon Su runs her math class and club.
Lim Soo-jung
Ji Yoon-soo
Lee Do-hyun
Baek Seung-yoo
Jin Kyung
Noh Jung-ah
Woo Da-vi
Sung Ye-rin
Jang Hyun-sung
Sung Min-joon
Byeon Jung-su
Yoo Hye-mi
Choi Dae-hoon
Ryu Sung-jae
Baek Ji-won
Min Hee-seung
Kim Ho-jin
Baek Min-shik
Jeon Guk-hyang
Shin Kyung-in
Oh Hye-won
Noh Yeon-woo
Lee Kang-ji
Lee Hyun-jae
Kim Ji-young
Kim Ji-na
Oh Kwang-rok
Ji Hyun-wook
Han Gi-joong
Ryu Hyun-il
Choi Seung-hoon
Young Baek Min-jae
Jang Gwang
Noh In-Hyeong
Son Jin-hwan
Principal Oh Jin-taek
Jeon Jin-gi
Vice Principal Choi Sung-han
Yang Jo-a
Kim Jin-hee
Ahn Sang-woo
Han Myung-Jin
Choi Woo-sung
Jang Kyu-young
Lee Young-eun
Park So-jung