This work is a compilation by producer Yoshitaka Kito of Okinawan singer-songwriters MR and ZIW. As the production progressed with the theme of "a work with two sides," MR's "JJ" is a song written from the artist's perspective about the emotional memory of not wanting to let the fun end at a convenience store at dawn, something that everyone has experienced. On the other hand, ZIW's "Additives park" is a unique piece that describes the addictive nature of convenience stores and the mindset towards a convenient world. Okay, let's go to the convenience store today.