The band consisted of bassist Jung Seok-won, guitarist Jo Dae-min (Dammit), and drummer Lee Hyun-gyu (Drok.

Guitarist Jo Dae-min (Dammit) is a former member of rock band Vanilla Unity that regularly guested at Seo Taiji’s concerts, bassist Jung Seok-won is a former member of Munch and Fantastic Drugstore, and drummer Lee Hyun-kyu (Drok.

[6] Dammit wasn't sure about Jung's musical style when he first heard about the offer to play with him: “I mostly knew him through variety programs, and I thought it would be a one-time thing.

[7] Jung and Dammit worked together to compose all of the tracks in the album, but all of the members helped to arrange the songs.

“I created the big frameworks for the songs, and each member tweaked their part to their liking,” Jung said.

[8] For "Lizard", Jung originally wanted to express his opinions on smoking, but it didn't pass Korean Broadcast Liberation.

On January 5, 2016, C9 Entertainment announced that Jung and his band officially signed an exclusive contract with their label, REALIVE.

On May 20, C9 Entertainment officially announced that Jung Joon Young Band had changed their name to Drug Restaurant.

Jung said he recorded the demo in English so he wanted to keep the vibe and nuances in the final version for the album.

Dammit said in previous albums they focused on accentuating Jung's vocals, but this time there are a lot of songs that highlight the characteristic of each instrument they play.

Jung announced on his personal Instagram that Drug Restaurant would take their tour to Europe in September.

He said he has friend in Paris who is a tour promoter for Korean artists who didn't make their debut in South Korea.

[20] On December 26, 2017, C9 Entertainment announced that Drug Restaurant would release a new digital single on January 1, 2018, "Her".

Along with the announcement, C9 released the single cover that showed the band standing on the staircase with the song's title written on the window behind them.

[22] A week earlier, C9 Entertainment announced that Drug Restaurant would release a new digital single on August 31, 2018, "403".

On March 11, 2019, it was revealed that Jung Joon-young was a suspect in the Burning Sun scandal, having filmed sexual encounters with at least 10 women in the past.