Majuu Jouka Shoujo Utea

Two ordinary high school girls, Karen and Mitsuki, are transformed into magical warriors by a mysterious creature, tasked with fighting monstrous threats to society. However, their mission takes a dark turn when they discover that purifying these monsters requires intimate encounters, drawing them into a cycle of pleasure and corruption as they struggle to protect their world and each other. As they face increasingly powerful beasts, the line between hero and monster blurs, testing their friendship and desires.