Key information
Sega and Colorful Palette have officially expanded the song library for the iOS and Android title Project Sekai Colorful Stage! feat. Hatsune Miku. As part of the 6th Anniversary Song Addition Campaign, the track Hydrangea, written and composed by LonePi, was introduced to the game on October 10, 2026.
Players can access the new content by visiting the music shop within the application. The track is unlocked for rhythm gameplay by exchanging music cards, allowing users to integrate the song into their regular rotation.
The release features two distinct audio versions for players to enjoy. The Sekai version includes vocals from Megurine Luka and the group 25-ji, Nightcord de., while the Virtual Singer version features the voice of Kaai Yuki.
To accompany the musical update, the developers have released a 3D music video for Hydrangea. This visual accompaniment is currently available for viewing on the official Project Sekai YouTube channel.
