Billlie is continuing to gear up for a comeback with their upcoming album 'Appendix: Of All We Have Lost.' The newest set of teaser photos emanates casual but stylish vibes, as the group poses in an idyllic nature setting. 

Fans can look forward to the first pre-release song, 'trampoline,' being released on October 11. Meanwhile, the full 5th mini album will be released on October 16 at 6 PM KST.

Are you excited for Billlie's comeback?

SEE ALSO: Billlie radiates cozy casual charm in the latest teasers for their 5th mini-album 'Appendix: Of All We Have Lost'