ok, I'm pretty sure I'm missing an extremely obvious crossover.... but I'm being distracted by Sakuya in skin tight clothes, and lots of maids in short skirts... Meiling in maid outfit... and not crazy Flandre...

Isn't this a Jojo parody? Not sure because I didn't see Phantom Blood, but she has the star mark.

Pretty sure it IS a Jojo parody, as the artist seems to be fond of those.

The star on Sakuya's Neck is pretty much JoJo.

We're missing a box of text when Sakuya is reading from the book.

The name is censored because this is before Sakuya became Remilia's servant, and no one knows what her name was back then.