Story contains the confessions of couples who are not able to express their feelings due to their closeness.
| Actor | Role |
|---|---|
 Ji Jin-heeMyung-hwan | Myung-hwan |
 Kim Sung-kyunTae-young | Tae-young |
 Sung Yu-riSeo-jung | Seo-jung |
 Kim Yeong-cheolGang-chil | Gang-chil |
 Lee Kye-inJong-gu | Jong-gu |
 Seo Kang-joonSang-gyu | Sang-gyu |
 Kang Shin-hyoJong-hyuk | Jong-hyuk |
 Kim Jae-hwaMi-yeon | Mi-yeon |
 Uh Sung-wookSon | Son |
 Jung JinNot listed | Not listed |
 Lee Ju-yeonJung Hye-mi | Jung Hye-mi |
 Lee Jung-eunWoman from Hwasoon | Woman from Hwasoon |
| PPark Ji-yeonTough Girl (Tough Couple) | Tough Girl (Tough Couple) |
 Park Jae-youngMiddle-Aged Man | Middle-Aged Man |
| KKim Hak-ryongBoxing Group Patient 2 | Boxing Group Patient 2 |
| KKim Heung-taeBurly Man at the Funeral Home | Burly Man at the Funeral Home |