This is the second single by Mao Mao, an idol character from Sonic Wings, one of the most popular shooting games of the 90s. Following the previous single "Panorama's Stage," this single continues the idol pop sound reminiscent of the 90's, but with a retro and new Hosoi sound. The album includes "Hello World" and the latest Reiwa version of Mao Mao's classic song "Tsuki no Sakana" plus instrumental versions of the two songs. The cover art is by Fumihiko Nantoka, the original designer of the Sonic Wings series, and includes a QR code to download the WAV file.