The arrival of an intimate letter prompts a young woman to bring her mother on vacation to a small Japanese town, where someone special resides.
| Actor | Role |
|---|---|
 Kim Hee-aeYunhee | Yunhee |
 Yuko NakamuraJun | Jun |
 Kim So-hyeSaebom | Saebom |
 Sung Yoo-binKyeongsu | Kyeongsu |
 Hana KinoMasako | Masako |
 Kumi TakiuchiRyoko | Ryoko |
 Sho YakumaruRyuske | Ryuske |
 Kim Hak-sunYoungho | Youngho |
 Han Song-heeDietitian | Dietitian |
 Yoo Jae-myungInho | Inho |
 Yoon Tae-heeEunyoung | Eunyoung |
 Kenji IwayaBartender | Bartender |
 Jung Eun-kyoungCook | Cook |
 Soh MorishitaA Drunk | A Drunk |
| TTakashi TatsuyamaMonk | Monk |
| MMegumi UmedaRyusuke's Mother | Ryusuke's Mother |
| UUmeko FushimiMasako's Cafe Guest | Masako's Cafe Guest |
| KKatsue MiyoshiHostess | Hostess |
| KKoichiUncle Haruo | Uncle Haruo |
| TTadayasu SasakiMourner | Mourner |
| JJung Tae-ohMourner | Mourner |
| LLee Won-jaYoonhee's Colleague | Yoonhee's Colleague |
| JJung Su-eonYoonhee's Colleague | Yoonhee's Colleague |
| AAhn Jeong-sukLocal Resident | Local Resident |
| HHan Jeong-suDriver | Driver |
| LLee Chung-jaePasserby | Passerby |
| PPark Jong-hyukA Truck Driver | A Truck Driver |
| OOh Jin-juJun's Childhood / Saebom's Friend | Jun's Childhood / Saebom's Friend |
| PPark Ji-suSaebom's Friend | Saebom's Friend |
| RRyu Myung-hanPolice | Police |