Description :
On a live music radio show, a letter arrives from the 23 years in the past. Through the letter, the first love and friendships of five friends are revealed. Unforgettable
Genre :
Casting :
Doh Kyung-soo , Kim So-hyun , Yeon Jun-seok , Lee Da-wit , Joo Da-young , Park Hae-jun , Kim Ji-ho , Park Yong-woo , Lee Dae-yeon , Hwang Suk-jung , Park Jeong-min , Lee Beom-soo , Hwang Young-hee , Park Choong-seon , Kim Kwon , Im Sung-jae ,