This is the first major single by Yu Miyashita, a multi-talented artist who is active mainly on the internet, producing music, illustrations, and animated music videos. The album includes "Kofukuron" the outro theme song for the TV anime "Platinum End," which will start airing in October 2021, as well as his original song "bystander" and "Phantom Raid," a new song written by Ren, a creator active on the Internet. The cover artwork was drawn by Yu Miyashita herself. Limited Edition DVD includes music videos of "Kofukuron" and "Phantom Raid".