There is a collaboration event going on in the free mobile app called Unison League! Players can get gear themed after Miku, Rin, Len, and Luka! Some of the gear (the "Monster" gear) features speaking vocals from the Vocaloids.
There are also special events taking place, in which Decade will play during these quests.
Previous items from previous collaborations have also returned!
Unison League:
App Store
Play Store
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