Characters played by Joo-Young Lee
Joo Soo-in
Characters played by Lee Joon-hyuk
Choi Jin-tae
Characters played by Yeom Hye-ran
Sin Hae-sook
Joo Soo-in's mother
Characters played by Young-kyu Song
Joo Gwi-nam
Joo Soo-in's father
Characters played by Kwak Dong-yeon
Lee Jeong-ho
Characters played by Hae-eun Joo
Han Bang-geul
Characters played by Yeon-soo Park
Joo Soo-hyeong
Characters played by Jong-soo Kim
Coach Park
Characters played by Chae-eun Lee
Teacher Kim
Characters played by Jeong-do Heo
Kim Jin-gyoo
Characters played by Sang-hee Lee
Principal
Characters played by Hye-Ryeon Won
Jeong Jaime
Characters played by Yoo Jae-myung
Team Head Kim
Characters played by Hayden Won
High school baseball player