Check out Reimu of Nijisanji EN
This VOD is the ultimate filter for NijiEN if you're a holobrony, but if you can appreciate the male and female livers collabing so casually then you'll be in for a good time. NijiENs drop in VC pretty often, so impromptu collabs are a mainstay for the branch.
https://www.youtube.com/watch?v=xa__bAjdJ2w 