The VOCALOID classic ロミオとシンデレラ (Romeo and Cinderella) was composed, arranged, and written by doriko, a producer whose melodic pop-rock style helped shape the late-2000s VOCALOID sound. Performed by Hatsune Miku, the song was originally released as a single in 2010. Its title fuses two archetypal love stories, Romeo and Juliet and Cinderella, and the lyrics play across both: the narrator pleads not to be cast as a tragic Juliet while simultaneously fearing the midnight deadline that governs Cinderella's world. At 170 BPM, the track pairs a driving guitar-driven arrangement with Miku's agile vocal delivery, building to a memorable chorus hook that has made it a staple of VOCALOID live sets and rhythm-game lineups alike. In the maimai series, ロミオとシンデレラ arrived at the launch of maimai PLUS in December 2012, making it one of the earliest VOCALOID entries in the franchise. The in-game cut runs approximately 1:42, a trimmed version of the full 2:30 recording used in SEGA's other rhythm games. The song's chart suite spans five difficulties, with the Expert and Master charts crafted by veteran designer 譜面-100号 and the Re:MASTER chart, added in September 2016, created by Jack. Across maimai's version history, ロミオとシンデレラ's difficulty levels have been adjusted more frequently than almost any other track in the series, reflecting the ongoing recalibration of its charts as the game's difficulty scale expanded.