>>86187270>>86189008A back and forth battle of wills between two laboratory rivals. Round one- Koyori catches you unaware, lacing your coffee with aphrodisiacs for her entire breeding season.
Round two- you get the jump with a lucky breakthrough and find a way to induce her breeding season at any time. She remains fully aware and intelligent, but is at the mercy of her instincts and has no choice. The effect eventually wears off, but with a score to settle, the two of you are now in a chemical arms race to reduce the other to a horny, idiotic mess.