Someday or One Day

Huang Yu-hsuan / Chen Yun-ru

Li Zi-wei / Wang Quan-sheng

Mo Jun-jie

Hsieh Tsung-Ju / Hsieh Chih-Chi

Wu Ying-chan

Wu Wen-lei

Chen Si-yuan

Yang Bi-yun

Tzu-Wei's Homeroom Teacher

Kun-Pu

Tsai Wen-Jou

Chen Tsai-Yu

A-Tuo

Na

Hsiao Tai

Tu Chih-min

Miss Sunny

Lin-Yueh

Vicky

Tu Chih-min's Ex-girlfriend

Yan Li-cheng