My First Love

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