Super Eight's Tadayoshi Okura, who has been working as a producer for the Kansai trainees since 2018,[3] had an idea to gather all artists from Kansai. That Idea came to fruition with the Dream Island concerts.[4]
Starting on July 28, 2020, groups and trainees from the Kansai region got together for the Johnny's DREAM IsLAND 2020→2025 [ja] non-audience live stream concerts, due to the COVID-19 pandemic. Super Eight, West. and Naniwa Danshi, then still a part of the trainees, along with other Kansai Jr. groups, had individual performances that lasted until August 25. It was there where the unit's idea was born.[5]
The unit's formation announcement was a surprise on April 29, 2024. The same day, an official website was opened, with the photo of all of the members of the 3 collaborating groups dressed in black, together with a teaser video.[6] "#KAMIGATA_BOYZ" and "#KamigataBoys" dominated the 1st and 2nd place in the trends.[7]
Their debut limited-edition single, "Musekinin de Eejanaika LOVE" was released in digital form on May 3, under the Storm Labels division Infinity Records, Super Eight's label.[8][9]