Outbox + CD + Booklet (64 P) + Mini Photobook + 4-Cut Photo + Random Photocard (Common 1 P, Unit 1 P)
Folded Poster (On Pack) + Sticker Pack : Preorder benefit. First press only.
Cover: 2 types (BOOM a CHK CHK)
Skladby
- Mountains
- Chk Chk Boom
- JJAM
- I Like It
- Runners
- 또 다시 밤 (twilight)
- Stray Kids
- Chk Chk Boom (Festival Ver.)
