Birthday Letter (Korean: 생일편지; RR: Saengil Pyeonji; MR: Sa'engil Pyŏnch'i) is a 2019 South Korean television series starring Song Geon-hee and Jo Soo-min, along with Jeon Moo-song and Jung Young-sook.
[6] This series is set during the Korean Independence War in 1945, and celebrates the Chuseok Party.
[7] During the Japanese colonial rule era, Kim Moo-gil (Song Geon-hee) and Yeo Il-ae (Jo Soo-min) are childhood friends who are each other's first love.
Against their will, they both have to leave Hapcheon, South Korea and go to Hiroshima, Japan for conscription.
Later, in 2019, they finally return home alive, and Moo-gil, now Jeon Moo-song, receives a birthday letter from his first love Il-ae, now Jung Young-sook.