Anna woke first the next morning. Which was fortunate, she considered, as she had forgotten to mention what sex with her would do. Kitsune like her did have powerful magic, but they needed to drain sexual energy in order to use it: masculine energy fuelled offensive magic, such as fireball or thunderwave, while feminine energy helped with the less offensive spells, such as tracking spells or shields.
Fortunately, Anna already had a lot of feminine energy, as all Kitsune did, so the energy drained from Erica would do little except give her a slightly lower libido for a few days, but wouldn’t cause any physical changes. Aaron was a different story. Anna had drained a large portion of his masculinity. Enough to temporarily change him into a half orc woman, budding breasts on her chest, and long black hair.
Luckily, the first time, the masculine energy would go into overdrive, so Aaron should be back to normal before he woke up. She’d have to make sure she didn’t have too many repeat encounters with the sexy half-orc, or she’d be stuck as a “she” forever.