Lee Seung Gi's teaser photos for his upcoming 5.5 mini-album 'Forest' have been revealed.

Agency Hook Entertainment stated that the singer worked with producer and one-band man Epitone Project (Cha Se Jung) to create an album that can be described as "healing music."�The title track "Looking Back" ("Turning Back") is a song fit for fall that tells the story of a man who wants to return to the past.

'Forest' will also include a photo essay by Lee Seung Gi, who collected images of spaces he felt resembled the music. The album will release on November 22 KST.

Until then, take a look at the teaser photos below.

[gallery]