190808 [X"] M/V Shooting D-1
https://youtu.be/BHCZRMp55q4
https://www.vlive.tv/video/143723
https://www.facebook.com/x1official101/videos/611748962681988/
https://www.instagram.com/p/B04x07GlsUk/

190811 [X"]M/V Shooting D-DAY
https://youtu.be/yk-YhQydVh4
https://www.vlive.tv/video/144151
https://www.facebook.com/x1official101/videos/2679401958757588/

190821 X1 飛翔 : QUANTUM LEAP' CONCEPT TRAILER
https://youtu.be/shrSaX2azZI
https://www.vlive.tv/video/145657
https://www.facebook.com/x1official101/videos/751823688586352/

190822 X1飛翔 : QUANTUM LEAP' HIGHLIGHT MEDLEY
https://youtu.be/fcBG6h3pnFg
https://www.vlive.tv/video/145835
https://www.facebook.com/x1official101/videos/407742486534666/

190824 X1 'FLASH' MV TEASER
https://youtu.be/alf_iPqgHdE
https://www.vlive.tv/video/146266
https://www.facebook.com/x1official101/videos/2830319753868734/

190827 X1 'FLASH' MV
https://youtu.be/LlQEKB2H7z4
https://www.vlive.tv/video/146677

190830 [ARCHIVE X] EP.1 X1 JACKET SHOOTING DAY 1
https://youtu.be/jiebQKm4HJg
https://www.vlive.tv/video/147254

190904 [CHOREOGRAPHY] X1 'FLASH' Dance Practice
https://youtu.be/p5VoKYWISL0
https://www.vlive.tv/video/148154

190904 [BE ORIGINAL] X1 'FLASH' (4K)
https://youtu.be/9e8mj3r8_4I

190906 [ARCHIVE X] EP.2 X1 JACKET SHOOTING DAY 2
https://youtu.be/qx61bCUzlzk
https://www.vlive.tv/video/148547

190909 (Behind) [BE ORIGINAL] X1 'FLASH' (ENG SUB)
https://youtu.be/q6u8Pn_gpAw

190913 [ARCHIVE X] EP.3 X1 'FLASH' MV SHOOTING DAY 1
https://youtu.be/yFCAGdzNZpA
https://www.vlive.tv/video/149590

190920 [ARCHIVE X] EP.4 X1 'FLASH' MV SHOOTING DAY 2
https://youtu.be/fsI9FwFmwPc
https://www.vlive.tv/video/150996