Released:

Overview:
Kang Shin-Woo is a math teacher with a good looking appearance. He has not forgotten his first love Han Ji-Soo for the past 10 years. By an accident, he travels to the past when he was a high school student. There, he meets his younger self. Kang Shin-Woo struggles to make the younger Kang Shin-Woo's love come true.

Director:
Min Yeon-hong

Runtime:
NaNh NaNmin

Genre:
Comedy, Mystery, Sci-Fi & Fantasy

• Cast:
• 
  Lee Jung-shin
  as
  Kang Shin-Woo
• 
  Seo Ji-hoon
  as
  Young Kang Shin-Woo
• 
  Lee Yul-eum
  as
  Han Ji-Soo
• 
  Lee Tae-seon
  as
  Shin Joo-Hwan
• 
  Cho Lee-hyeon
  as
  Baek Na-Hee