By Dramabeans
Ahn Joo-young
Ahn Joo-young
6
Wavve
South Korea
Korean
Source: Wikipedia
Jung-woo – High school teacher who discovers his fiancée is cheating with a friend.
Kang Seon-ah – Ji-wook's niece and Hyun-heup's classmate.
Oh Dong-sik – Ji-wook's junior and assistant detective.
Lee Gyu-jin – A mysterious high school teacher whose calm demeanor hides eerie smiles and secrets.
Shin Hyun-heup – The only person naturally born with the ability to see the "S Lines".
Han Ji-wook – A free-spirited and handsome detective assigned to a bizarre death case tied to the "S Line". After wearing special glasses, he's shocked to see dozens of red lines crisscrossing over his head and resolves to uncover the mystery.