Hong Eun-ki's single "ON&ON" will be released on various music sites at noon on January 5th.

In particular, the second teaser video for "ON&ON" released on January 4th shows Hong Eun-ki's 180-degree change from the first.

In the second video, Hong Eun-ki, wearing a black costume, has a basic and sexy eyes that give off a contrasting feeling, looking at the glass shoes in a meaningful way.

"ON&ON" is a song that contains a repeated relationship that is pulled without any clear progress, and Hong Eun-ki participated in the overall production and improved the level of perfection.