[Xdinary Heroes : Xtra Files]

1 · Ep.1 Happy Death Day - Music Video Shoot 1

2 · Ep.2 Happy Death Day - Music Video Shoot 2

3 · Ep.3 Happy Death Day - Jacket Photoshoot

4 · Ep.4 Behind the Scenes of the Documentary Shoot

5 · Ep.5 Behind the Scenes of the Debut Showcase

6 · Ep.6 Music Show Behind the Scenes 1

7 · Ep.7 Music Show Behind the Scenes 2

8 · Ep.8 "It's Live" Behind-the-Scenes

9 · Ep.9 1st Look Behind-the-Scenes

10 · Ep.10 Idol vs. Idol Behind-the-Scenes