Failing to take down the rampant demons. The portals kept opening, swarming the land and dooming the world whilst she was cumming her brains out which proved that she was not worthy of being the defender of light. But the demons had found a new purpose in her as the miasma in the land that the demons lived in started to corrupt her body and mind. Turning her into one of them. From the non-stop fucking from the demons and the miasma corrupting her mind and body. She'd eventually find herself changing. Her mind becoming more depraved as her body changes. Eventually she found herself with a new purpose, a new goal with a new body. To corrupt others alike her, and turn them into demonic sluts just like she is now. Truly an ending fitting for a heroine.