Yamashita Tomohisa and Nagasawa Masami play a young man and woman who have been friends since elementary school. Yamashita's character, Iwase Ken, is obstinate and unskilled in love, but he fell long ago for the lively and cheerful woman, Yoshida Rei, played by Nagasawa. But Rei is about to get married to another man. While Ken and other friends from high-school attend the wedding ceremony, a fairy appears and sends Ken back in time, giving him a second chance to win the girl he loves.

Cast
* Yamashita Tomohisa as Iwase Ken
   * Kitamura Kaito (北村海斗) (third grade)
* Nagasawa Masami as Yoshida Rei
   * Matsumoto Tamaki (松元環季) (third grade)
   * Hashimoto Kurumi (橋本くるみ) (primary school)
* Fujiki Naohito as Tada Tetsuya
* Eikura Nana as Oku Eri
* Hiraoka Yuta as Enokido Mikio
* Hamada Gaku as Tsurumi Hisashi
* Mikami Hiroshi as the Yosei/Fairy
* Matsushige Yutaka as Itou Matsunori
* Yamazaki Shigenori as 御法川潤蔵
* Morimoto Leo as Yoshida Takashirei
* Miyazaki Yoshiko as Yoshida Reina
* Watabe Gota as Socrates
* Hara Fumina as Matsuki Yuko
* Kikuchi Kenichiro (菊池健一郎) as Nishio Tamotsu
* Troare Issa (トラオレ・イッサ) as the marathon runner
* Takeuchi Tomoya (classmate)
* Okawa Masahiro (大川雅大) (classmate)
* Arai Kenta (荒井賢太) (classmate)
* Ikezawa Ayaka (classmate)
* Masumoto Yuko (classmate)