I dont know if this gets the _cosplay tags because its a trace

Why would it? It's not intended to be K-on's cast cosplaying as vocaloid or vice-versa. There's absolutely no reason to treat it as cosplay.

ok :)

Why is this explicit???

Nice repeat rotorscope animation.

their just replacing the k on cast in the entrance their not cosplaying as them XD

Yes.
Yes.
A million times yes.

[deleted]

I'd watch it. All day long.