Guilty challenge

A dance/drawing challenge originated from the song called 'Guilty' by the K-POP artist TAEMIN (from group SHINee).
The original challenge came in the form of a short dance; it has evolved into a drawing challenge among 2D fan artists who draw their favorite characters in the "hand under shirt" pose from the choreography.

Oh my god! X did the Guilty challenge! Why is this clip 5 hours long? I can't stop watching!