A young woman with the ability to see mysterious red connections between lovers discovers her secret gift is no longer unique when special glasses granting similar powers appear on the black market.
| Actor | Role |
|---|---|
 Lee Soo-hyukHan Ji-wook | Han Ji-wook |
 ARINShin Hyeon-heup | Shin Hyeon-heup |
 Lee Da-heeLee Gyu-jin | Lee Gyu-jin |
 Lee Eun-saemKang Seon-ah | Kang Seon-ah |
 Kim Dong-youngOh Dong-sik | Oh Dong-sik |
 Lee Gwang-heeJoon-seon | Joon-seon |
 Lee Han-jooYoon Ji-na | Yoon Ji-na |
 Woo Ji-hyunJung-woo | Jung-woo |
 Nam Kyu-heeKim Hye-yeong | Kim Hye-yeong |
 Oh Woo-riLee Kyung-jin | Lee Kyung-jin |
 Oh Seung-junLee Ji-won | Lee Ji-won |
 Kim So-youngChoi I-seo | Choi I-seo |
 Park Seong-ilBang Seong-jin | Bang Seong-jin |
 Lee Ga-subOh Jung-min | Oh Jung-min |
 Park Ye-niHee-won | Hee-won |
 Jeong Jae-kwangBartender | Bartender |
| JJang SunHyeon-heup's Mother | Hyeon-heup's Mother |