Test subject: Two heads

It appears that Rias Gremory is the new test subject for this lab mutation, the unstoppable two-heads. 

Will Rias have a chance? Will you recognize the reference in this illustration?

Welcome to Rapture

Mina decides that it’s time for a change in her life, to do something great and destiny sends her to Rapture.

Here she will discover new perversions and ways of playing that she had never imagined before. "Pick your Plasmid and evolve!"

I've always wanted to make a Bioshock-themed image, so thanks to @nelttab for commissioning this piece.