A shy math teacher time-travels back to high school to win his lost love, competing with his younger self for her heart.
Cast
The cast behind this title
Lee Jung-shin
Kang Shin-Woo
Seo Ji-hoon
Young Kang Shin-Woo
Lee Yul-eum
Han Ji-Soo
Lee Tae-seon
Shin Joo-Hwan
Cho Lee-hyeon
Baek Na-Hee
Min Do-hee
Jang So-Ra
Lee Joo-hyung
Choo Geun-Deok
Kim Sun-young
Shin-Woo's mother
Park Han-sol
Kim Yun-jeong
Ko Kyu-pil
Mozart student's Head Teacher
Kim Min-seok
Kim Min Seok
