Kang Ja-gyum (played by Yoon So-Yi) is a protagonist in The Lost Choices.
Chae Ji-eun (played by Shin Hyun-been) appears in The Lost Choices.
No Chang-bae (played by Ahn Se-ha) appears in The Lost Choices.
Ji-eun's father (played by Jo Young-jin) appears in The Lost Choices.
Ji-eun's mother (played by Kim Young-sun) appears in The Lost Choices.
Detective Park (played by Kim Kyung-sik) appears in The Lost Choices.
[Detective #2] (played by Kim Jung-woo) appears in The Lost Choices.
