[2] Go chose Holland for his stage name as a tribute to the first country to legalize same-sex marriage.

[3] When Holland first decided to pursue music, he attempted to audition to join an entertainment company.

[5] The music video shows Holland and his male counterpart kissing, and received a 19+ rating in South Korea.

On March, 30 2023, Holland made a comeback with the synth-pop single "NUMBER BOY".

In an interview for the Brazilian magazine Quem, he said: "To be honest, I was fed up with being discriminated against and living underground because I was gay.

Holland, who was not home at the time, wrote a letter to his family after they found out and explained everything to them.

[13][14] Go decided to make his debut as a singer to speak out based on his experiences with violence inflicted on sexual minorities.

In the end, he produced his first single with money he saved from his part-time job over the course of two years, without an agency backing him.