I'm not sure but:
"Mister lolicon, this is your fault!!"

But it might be saying:
"Mister lolicon, congratulations!!"

The first seems more likely with Miku's expression. And it might not be 'lolicon', because it's more accurately 'lolicom', but I don't know who would fall under that name. could be a friend of the artist?

vampkoess said:

I'm not sure but:
"Mister lolicon, this is your fault!!"

But it might be saying:
"Mister lolicon, congratulations!!"

The first seems more likely with Miku's expression. And it might not be 'lolicon', because it's more accurately 'lolicom', but I don't know who would fall under that name. could be a friend of the artist?

Very late on this, but LOLI.COM is a producer and utaite.