Key information
Sega and Colorful Palette have officially expanded the music library for the iOS and Android rhythm game Project Sekai Colorful Stage! feat. Hatsune Miku. As part of the 6th Anniversary Song Addition Campaign, the track Ultimate Senpai, written and composed by PinocchioP, was added to the game on October 8, 2026.
Players can access the new song by visiting the in-game Music Shop and exchanging Music Cards. The track is available in two distinct versions: a Sekai version featuring Hatsune Miku and the group Wonderlands x Showtime, and a Virtual Singer version performed solely by Hatsune Miku.
To accompany the release, the developers have premiered the 3D music video for Ultimate Senpai on the official Project Sekai YouTube channel, allowing fans to view the visual presentation associated with the new rhythm game addition.
