Role: Enfei Li/Gao Enxing
Actor: Jin Suoxuan; Jiang Zhiyu (child's eye)
Remarks: Queen of Shijiang High School
Role: Han
Actor: Nan Zhuhe
Remarks: Shi Jianggao is a swimming genius.
Role: hole
Actor: Yucheng JAE
Remarks: Shijianggao's biggest problem student
Role: Jin Junxi
Actor: Li Bimo
Remarks: Shi Jiang is the head teacher and math teacher of Class 3, Grade 2.
Role: Jiang Suying
Actor: Zhao Xiuxiang
Remarks: Shijiang high school transfer students; Enfei's old classmate
Role: Park Min-jun
Actor: Li Dawei
Remarks: Monitor of Class 3, Grade 2, Shijiang Middle School
Role: Che Songzhu
Actor: Jin Xiting
Remarks: Class 3, Grade 2, Shijiang High School.
Role: Li Shizhen
Actor: Cho-hee Lee
Remarks: Class 3, Grade 2, Shijiang High School.
Role: All of Ji Tai
Actor: Doo-sik Park
Remarks: Class 3, Grade 2, Shijiang High School.
Role: Zhao Haina
Actor: Li Yuying
Remarks: Class 3, Grade 2, Shijiang High School.
Role: Cheng
Actor: Zhang Renxie
Remarks: Class 3, Grade 2, Shijiang High School.
Role: Xu Yingen
Actor: Jin Baoluo
Remarks: Class 3, Grade 2, Shijiang High School.
Role: Song Meijing
Actor: Mi-seon Jeon
Remarks: Enxing's foster mother
Role: Han
Actor: Li Taiyuan
Remarks: Yi 'an's father; Skilled worker
Role: hole
Actor: Quan Yemin
Remarks: Guang Tai's father; Chairman of Shijiang High School Consortium
Role: Rodman
Actor: In-gi Jung
Remarks: Min Jun's father; School full-time police
Role: Shen
Actor: Jin Zhenlan
Remarks: Min Jun's mother
Role: a real mother
Actor: Jin Shiya
Remarks: A real mother
Role: Su Ying's father
Actor: Zhao Dexian
Remarks: Su Ying's father; agent
Role: Sue
Actor: Jae Eun-jung
Remarks: Su Ying's mother
Role: Teacher An
Actor: Zheng Xiuying
Remarks: English teacher of Shijiang Middle School
Role: Zheng Minying
Actor: Li Shiyuan
Remarks: Practical teacher of Class 3, Grade 2, Shijiang High School; Xiuren's sister
Role: Min-suk Kim
Actor: Min-suk Kim
Remarks: Class 3, Grade 2, Shijiang High School.
Role: Li Zhenquan
Actor: Li Zhenquan
Remarks: Class 3, Grade 2, Shijiang High School.
Role: Park Yacheng
Actor: Park Yacheng
Remarks: Class 3, Grade 2, Shijiang High School.
Role: Cao Binggui
Actor: Cao Binggui
Remarks: Class 3, Grade 2, Shijiang High School.
Role: Wu Yuzhen
Actor: Wu Yuzhen
Remarks: Class 3, Grade 2, Shijiang High School.
Role: Li Shenghao
Actor: Li Shenghao
Remarks: Class 3, Grade 2, Shijiang High School.
Role: Cui
Actor: Cui
Remarks: Class 3, Grade 2, Shijiang High School.
Role: Chi Xiayin
Actor: Chi Xiayin
Remarks: Class 3, Grade 2, Shijiang High School.
Role: Xu
Actor: Xu
Remarks: Class 3, Grade 2, Shijiang High School.
Role: Quan Enxiu
Actor: Quan Enxiu
Remarks: Class 3, Grade 2, Shijiang High School.
Role: Zheng Yizhi
Actor: Zheng Yizhi
Remarks: Class 3, Grade 2, Shijiang High School.
Role: Han
Actor: Han
Remarks: Class 3, Grade 2, Shijiang High School.
Role: Jin Shiyong
Actor: Pei Xiubin
Remarks: The new head teacher of Class 3, Grade 2, Shijiang High School.
Role:-
Actor: Hee-do Lee
Remarks: Supervisor of Shijiang Middle School
Role:-
Actor: Jeong-geun Sin
Remarks: Dean of Shijiang High School
Role:-
Actor: Cui
Remarks: swimming coach