He released his first solo single "Shiba" since last year's release of "Horizon. The lyrics of this song are based on his own experiences and the theme of "the gap between self-consciousness and reality. The title "Grass" represents the freedom that accompanies the song to escape from the "gap between self-consciousness and reality," which is the theme of the song. The song's catchy melody contrasts with the bright, light beat and heavy lyrics. The artwork for this album was created by Ash Won himself.