I can tell you, as a Hololive fan myself, they'd issue a C&D if they found out. Plus, unlike the others here who are all completely fictional, we can't forget that vtubers are more than just their avatar, but the real people behind them.
It is of course your decision but I'll refute the other person's claim about Hololive issuing a Cease and Desist. Several of the talents actively search for and purchase lewd works of themselves and Hololive doesn't take those down.
