What the Hell Is Love

Director

• 
  Chu Yu Ning

Makeup Artist

• 
  Chu Chia Yi

Main Role

• 
  JC Lin

  Luo Yi Fan

  Main Role
• 
  Vera Yen

  Zhao Nuan

  Main Role
• 
  Cheng Jen Shuo

  Wen Wei Ren

  Main Role
• 
  Daniel Chen

  Lian Da Feng

  Main Role
• 
  Stone Yang

  Fang Xiao Wu

  Main Role
• 
  Sheng Ping

  Liao Mei Juan

  Main Role
• 
  Lotus Wang

  Luo Chen Feng Jiao

  Main Role
• 
  Yvonne Cheng

  Zhuang Li Ling

  Main Role

Support Role

• 
  Danny Lee Support Role
• 
  Tsai Jia Yin Support Role

Guest Role

• 
  Mario Pu

  Chen Guo Chang (Case 1)

  Guest Role
• 
  Mimi Shao

  Zhou Xiao En (Case 1)

  Guest Role
• 
  Erek Lin

  Lu Pin Guan (Case 1)

  Guest Role
• 
  Wenny Lin

  Lu Pin Xuan (Case 1)

  Guest Role
• 
  Snoopy Yu

  Yan Kai Xiang (Case 1)

  Guest Role
• 
  Diane Lin

  Chen Jia Ling (Case 2)

  Guest Role
• 
  Honduras Hong

  Lin Fu Quan (Case 2)

  Guest Role
• 
  Phil Hou

  Liu Yi Xiang (Case 2)

  Guest Role
• 
  Chin Tzu Yen

  Wang Shu Li (Case 2)

  Guest Role
• 
  Christopher Lung

  Zhang Rong Liang (Case 2)

  Guest Role
• 
  Yuan Kuo

  Jiang Yi Ning (Case 2)

  Guest Role
• 
  Lin Chih Ju

  Da Chen/ Xiao Chen (Case 2)

  Guest Role
• 
  Lin Yu

  Guo Wei (Case 2)

  Guest Role
• 
  YU

  Long Zai (Case 3)

  Guest Role
• 
  Shih Ming Shuai

  Cen Shi Fan (Case 3)

  Guest Role
• 
  Edward Chen

  Li Guan Jun (Case 3)

  Guest Role
• 
  Moon Lee

  Xiao Qing (Case 3)

  Guest Role
• 
  Zhang Yong Zheng

  Deputy director (Case 3)

  Guest Role
• 
  Snowbaby

  Lu Shan Shan (Case 4)

  Guest Role
• 
  Chris Wu

  David (Case 4)

  Guest Role
• 
  Chu Yu Ning

  Live streaming boss (Case 4)

  Guest Role
• 
  Lung Shao Hua

  Lin Shui Mu (Case 4)

  Guest Role
• 
  Miao Ke Li

  Jian Gu Ru (Case 4)

  Guest Role
• 
  Lyan Cheng

  Ling Ling (Case 4)

  Guest Role
• 
  Oscar Chiu

  Xu Yi (Case 4)

  Guest Role
• 
  Alex Ko

  [Prosecutor]

  Guest Role
• 
  Chung Cheng Chun

  Zheng Jun (Case 4)

  Guest Role
• 
  Yu An Shun

  Da Feng's father (Case 5)

  Guest Role
• 
  Soda Voyu

  Hu Fu Da (Case 5)

  Guest Role
• 
  Heaven Hai

  Amy (Case 5)

  Guest Role
• 
  Chen Bo Xun

  Luo Yi Fan young (Case 6)

  Guest Role
• 
  Ada Pan

  Zhao Nuan's mother (Case 6)

  Guest Role
• 
  April Liu

  Yi Fan's mother (Case 6)

  Guest Role
• 
  Jason Tsou

  Zhao Nuan's father (Case 6)

  Guest Role
• 
  Trent Chen

  Younger Shui Mu (Case 6)

  Guest Role
• 
  Shang Ho Huang Guest Role
• 
  Crowd Lu

  [Master of 9th Hell] (Ep. 20)

  Guest Role
• 
  Wang Zi

  [Master of Future Palace] (Ep. 20)

  Guest Role
• 
  Huang Sin Ting

  Zhao Nuan [Child]

  Guest Role
• 
  Wu Chen Ya

  Fang Chung | Chao Chi Lien (Ep. 1-2)

  Guest Role

Unknown

• 
  Tsai Chen Nan Unknown