As a singer-songwriter, Suna has been involved in a wide range of activities, not only making music but also producing short films. For three years after the Korona disaster, Suna has continued her music activities, focusing on posting cover videos on video-sharing websites. In 2023, she launched a new solo project, SANDTOWN, and released her first single, "Nevertheless". Inspired by the popular Korean drama "Nevertheless" on NETFLIX, the song is lo-fi chill music in the style of 80s-90s city pop. The song is a poetry ballad about a protagonist who falls into the trap of love even though he knows it is wrong. The arrangement was done by British artist Giant Chess Men, who is a close friend of SANDTOWN.