アイドル新鋭隊 (Idol Shin'eitai) is a Vocaloid idol-pop track produced by Mitchie M, one of the most respected Vocaloid-P creators known for his meticulously human-like tuning of Hatsune Miku. The song was originally commissioned for Project SEKAI カラフルステージ！ feat. 初音ミク, where it serves as a unit song for MORE MORE JUMP!, an idol-focused group within the game. In this recording, Miku joins the unit's vocalists to deliver a bright, energetic anthem about a fledgling idol troupe finding its footing and aiming for the top. The track joined maimai DX UNiVERSE on October 15, 2021 as part of the ongoing Project SEKAI cross-game collaboration, bringing its 176 BPM pop momentum to the arcade. On the charting side, the MASTER difficulty (level 12) was designed by シチミヘルツ and stands out for its heavy slide-note count, 127 slides out of 508 total notes, a proportion that gives the chart a distinctive, flowing feel. The EXPERT chart (level 9+) was handled by 隅田川星人, offering a dense but approachable step up. All difficulties were released simultaneously across Japanese, international, US, and Chinese regions under the UNiVERSE version.