Main •
Park Jin-young as Yeon Tae-seo :A subway engineer who views the world realistically and prioritizes living safely in the present. After achieving the independent life he long sought, he reunites with Mo Eun-ah, his first love from when he was nineteen, bringing subtle changes to his settled daily routine. •
Kim Min-ju as Mo Eun-ah :A senior hotelier who guided Mo Eun-ah onto the path of becoming a hotelier and remains by her side with quiet affection. •
Park Se-hyun as Im Ah-sol :Yeon Tae-seo's younger brother who works at a rural post office. He was injured in the accident that killed their parents, leaving him with a permanent limp. •
Kang Shin-il as Yeon Chang-sik :Tae-seo and Hee-seo's grandfather. • Byun Jung-hee as Park Hwa-soon :Tae-seo and Hee-seo's devoted grandmother.
Mo Eun-ah's family •
Kim Tae-hoon as Mo Seon-gyu :A third-generation Hawaiian immigrant journalist, who fell in love with Mo Seon-gyu after interviewing him.
Yeonwoo-ri people • Park Jung-ja as fortune teller :The elderly owner of the village general store. • Kim Cheol-yoon as Jeong Jin-soo :The eldest son of a woodworking shop owner and Yeon Tae-seo's longtime friend, who has quietly remained by his side through the years. • Oh So-hyun as Jin Hyang-gi :A post office delivery worker who rides a scooter to deliver mail who is popular among the elderly residents.
Others •
Lee Chang-hoon as Mu Jeong-su :A Mathematics teacher at the rural high school where Yeon Tae-seo and Mo Eun-ah study. • Lee Ji-hae as Jae-soon :A veteran train engineer who appears blunt and rough on the outside but deeply cares for her colleagues and takes pride in her work. • Park Geun-rok as Kim Ho-sik :Park So-hyun's ex-boyfriend, who is a Seoul-based freelance content creator. ==Production==