Succubus & Magic Ver.Final by Snail - Adult Sex Game

It's been millennia since the Hero and the Demon Lord came to an agreement, and both monsters and humans began to live in peace.
The player, a member of the Ethics Committee in Holy Grail Academy, hears word of Victoria, a student in the same class as him, being set up to become the next Ethics Committee president.
The Ethics Committee is a harsh hierarchy. And now Victoria will be your boss...
You can't let this happen. Now it's do or die. You'll compete against Victoria through proof of your achievements, with how many cases each of you has successfully dealt with in a month.
It's time to give it your everything. You're resolved to stop Victoria, though...​