From teen years to adulthood, two friends linked by warmth and tension grow apart — until one is asked to accompany the other through her final days.
Kim Go-eun
Ryu Eun-jung
Park Ji-hyun
Cheon Sang-yeon
Kim Gun-woo
Kim Sang-hak
Kim Jae-won
Cheon Sang-hak / Moonee
Moon Woo-jin
Young Cheon Sang-hak
Jang Hye-jin
Sun-young
Seo Jeong-yeon
Hyun-sook
Joo Min-kyung
Choi Gyeong
Gong Min-jeung
Oh Hee-jin
Cha Hak-yeon
Song Yu-chan
Yoon Se-woong
Sang-yeon's Father
Lee Sang-yun
Seung-ju
Do Yeong-seo
Ryu Eun-jung
Song Ji-oh
Cho Su-mi
Kim Go-eun
Ryu Eun-jung
Park Ji-hyun
Cheon Sang-yeon
Kim Gun-woo
Kim Sang-hak
Kim Jae-won
Cheon Sang-hak / Moonee
Moon Woo-jin
Young Cheon Sang-hak
Jang Hye-jin
Sun-young
Seo Jeong-yeon
Hyun-sook
Joo Min-kyung
Choi Gyeong
Gong Min-jeung
Oh Hee-jin
Cha Hak-yeon
Song Yu-chan
Yoon Se-woong
Sang-yeon's Father
Lee Sang-yun
Seung-ju
Do Yeong-seo
Ryu Eun-jung
Song Ji-oh
Cho Su-mi
Kim Go-eun
Ryu Eun-jung
Park Ji-hyun
Cheon Sang-yeon
Kim Gun-woo
Kim Sang-hak
Kim Jae-won
Cheon Sang-hak / Moonee
Moon Woo-jin
Young Cheon Sang-hak
Jang Hye-jin
Sun-young
Seo Jeong-yeon
Hyun-sook
Joo Min-kyung
Choi Gyeong
Gong Min-jeung
Oh Hee-jin
Cha Hak-yeon
Song Yu-chan
Yoon Se-woong
Sang-yeon's Father
Lee Sang-yun
Seung-ju
Do Yeong-seo
Ryu Eun-jung
Song Ji-oh
Cho Su-mi