Overview

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.

Details

Cast

Doh Kyung-soo

Kim So-hyun

Yeon Jun-seok

David Lee

Joo Ah-reum

Park Hae-joon

Kim Ji-ho

Park Yong-woo

Lee Dae-yeon

Hwang Seok-jeong