On May 27, Ghost9 (Hwang Dongjun, Son Junhyung, Lee Shin, Choi Junseong, Lee Kangsung, Prince, Lee Woojin, Lee Taeseung, and Lee Jinwoo) released a special video for their 4th mini album's intro track, "ON AND ON". 

In the teaser video, the scene opens up with the Ghost9 members standing in a field of flowers, under the blue sky. The members soon move towards the sea and enjoy splashing in the cool water. They further spend the day at an aquarium and ride bikes outdoors, having a quite happy day.

Here, the Ghost9 members show their refreshing visuals and with their playful charms, they radiate a fresh, healing energy. The song's bright melody and lyrics also contribute to its lasting impression. "ON AND ON" is a light-hearted and bright rhythmical song that offers its listeners a view of the different colors of Ghost9's musicality. Leading up to their comeback many fans have expressed their extreme excitement, looking forward to discovering new charms to Ghost9.

The 'NOW' series continues with their fourth mini album, 'NOW: When we are in Love' captures the moment of falling in love and the moment of being in love. Their title track "Up All Night" will relay the feelings of constant love, and show a dramatic upgrade in the charms displayed by the Ghost9 members.

The tracks to Ghost9's fourth mini album 'NOW: When we are in Love' will be released digitally across different music platforms on June 3.