“Gone Days” was originally released as part of the “Mixtape Project” on December 26, 2019 as an end of the year gift to fans. The song was later released on their album GO生 in June 2020.

The song conveys a fresh charm combined with with a self-aware lyrics. Written and composed by leader Bang Chan, the song depicts him nagging about what he can or can’t do and all the while, he is underestimated because of his age.

As the years have passed and the future is continues to come, “Gone Days” is a plea aimed at adults to quell their worries and trust and watch the new generation’s movement and growth.