ここからはじまるプロローグ。 ("The Prologue That Starts from Here") is a maimai original song created by the anonymous-seeming composer ああああ (also credited as aaaa, real name Mamoru Miyata). Released on January 23, 2020, as part of the maimai でらっくす PLUS update, it was first unlockable through the in-game area はじまりのちほー2 (Beginning Area 2) before becoming available by default from maimai でらっくす Splash PLUS onward. The track sits at a brisk 182 BPM and runs 2 minutes and 9 seconds with no lyrics, a purely instrumental composition driven by energetic synth leads and crisp percussion. ああああ began their composing career in 2013 and is also known as a member of the doujin music unit ああ...翡翠茶漬け... ("Aa... Hisui Chazuke...") alongside 梅干茶漬け (Umeboshi Chazuke) and 翡乃イスカ (Hino Isuka). The song's music video was produced by TOYCAT with dot-pixel artwork by おゆざき. In the maimai series, the song's MASTER chart (designed by 華火職人 / Kanon Oguni) and EXPERT chart (designed by サファ太 / Safata) are noted for their relatively approachable note counts within the 13 and 10+ level brackets respectively. Beyond maimai, the song has crossed over into Sega's other rhythm games: CHUNITHM PARADISE LOST (July 2021) and オンゲキ bright MEMORY (July 2022), each with its own chart designs and difficulty scaling. A remix by Kanon Oguni (credited as 華火職人, the same person behind the MASTER chart), titled ここからはじまるプロローグ。(Kanon Remix), was included on the maimai 10th Anniversary Original CD. The song also connects thematically to 僕たちの旅とエピローグ。 ("Our Journey and Epilogue"), a BMS composition by the same artist that originated in the BMS of Fighters 2004 RELOADED contest.