Imagine shota kemokasa and sorcerer rui. So rui accidentally brought this monster into his lab by some magic spell and he doesn't know what to do. He can't understand what tsukasa is saying. But he doesn't know the little monster is in heat so when he turns his back, tsukasa forces himself on rui. And now he has to endure a pent up little monster fucking him until tsukasa passes out (hint: rui passed out first)