いきなり先生になったボクが彼女に恋をした

Yesung

Young-Ung

Nozomi Sasaki

Sakura

Masahiro Sato

Kawamoto

Eri Fuse

Sayuri

Isao Takeno

CEO Kusunoki

Mitsuru Fukikoshi

Karaoke bar's master

Kazuha Sakiyama

Yuri

Kensaku Nagata

Shuichi

Musei Kamichi

Kei Yamashiro

Kanako Fukuda

Tomiko Yamashiro

Kang Dong-gyun

CEO Choi