Azur Lane uses Vtubers for promo's and special events.
Pamiat Merkuria's VA does the vtuber bit for their Bisoku anime promos:
>>https://www.youtube.com/watch?v=uZbpaOlOz-MAnd they made a Christmas special with Sumire Uesaka playing Akashi as a Vtuber, but it was like... 5 minutes at the beginning and 5 minutes at the end of a 3 hour broadcast:
>>https://youtu.be/bSCRBvPUBPg?t=338But as
>>921188 said, VAs don't have time to keep the commitment for too long. Even Azur Lane's weekly radio show, with the game in full development and growing, an anime just ending and another about begin, eventually reached the end of it's run last year because of that - and that was only one hour per week.