Heavenly Blast is a high-speed original composition by xi (Yusuke Ishiwata), one of the most prominent creators in the rhythm game scene known for genre-defining tracks such as FREEDOM DiVE and Glorious Crown. The song first appeared on the album PANDORA BOXXX PLUS, released as part of a present campaign for maimai DX Splash PLUS, before being added to the game itself on March 18, 2021. Heavenly Blast entered maimai DX Splash PLUS as a premier boss reward: players had to defeat the SSS1-class boss friend in Friend Matching (オトモダチ対戦) and reach LEGEND class to unlock it, after which they could "conduct" the song to other players in multiplayer sessions. From maimai DX UNiVERSE onward, the song was made permanently available by default. The track is widely regarded as a spiritual successor in a trilogy of xi compositions for maimai, following FREEDOM DiVE and Glorious Crown, and shares visual motifs with both. The music video, created by the artist Sam (サム), features objects evoking Aiolos and the crown from Glorious Crown, while scattering visual references to every major pre-DX maimai version from the original through FiNALE. At 234 BPM, Heavenly Blast is among the fastest songs in the maimai original repertoire, and its MASTER chart, designed by The ALiEN (an alias of Sumidagawa Seijin), is notorious for a climactic 12th-note triplet trill followed by dense, high-speed spiral patterns. The song was later selected as an online qualifying piece for KING of Performai The 6th tournament.