/vt/ - Virtual Youtubers

Here is an interesting chart from Niji to stimulate some productive conversation
>median of peak CCV, Nijisanji, per branch

Everybody knows what happened on NijiEN in that yellow date (2021-10-09) but WTF happened on NijiJP on 2021-09-27?
It can't be the end of the koshien buff alone because that was in the middle of August.
>SPECULATE