Im Si-wan is returning as a singer.

He will release his first solo album The Reason on December 5 at 6 p.m. through major music platforms.

According to SM Entertainment, Im Si-wan will unveil a highlight medley on the SMArt YouTube channel at 6 p.m. on the 28th.

Fans will get an early preview of five tracks from his first mini-album, including the title song The Reason.

The track Two of Us is a folk song featuring a fairytale-like intro, sweetly portraying the excitement of a heartfelt confession.

Dear My Love is a ballad built on calm piano lines and a four-piece string arrangement.

The song unfolds like a pure, handwritten letter to a loved one, expressing a wide range of tender emotions.