Koyanskaya your "Benevolent" Advisor

You contracted Koyanskaya in the hopes that she would make you rich. She did. Unfortunately for you, you've more or less made a deal with the devil. Don't forget, she may be a Servant now rather than a calamitous Beast, and you may have summoned her light half, but that doesn't exactly mean she isn't evil. She's helped you make millions in a pretty short amount of time, on the condition that you help with her sexual needs. Sounds nice enough, right? Well, the money was earned in morally bankrupt ways, like drugs, human trafficking, weapons, etc. and she doesn't intend to let you keep any of it. Her cum is addictive, and she knows it's only a matter of time before you'll be willing to give up all the riches she's made you for another taste.