Adult PC Game: The Queen's Conduit Ver.0.4.1 by Dreamspinner Archive

Femdom Bullet-Hell RPG - Inspired by Undertale and a lot of other femdom games.
You are granted access to a realm through the form of a body known as a "conduit", and tasked with saving the realm from ruin. The only way to get stronger is to lose to increasingly powerful opponents (who just so happen to be almost exclusively hot women who want to dominate you).​