Kyoko the bratty mage

you ask Kyoko a renowned mage, to teach you magic. Unfortunately, you sucked at it. more unfortunately, she laughed at your pitiful attempts to cast spells, to the point of tears. Now, you're a bit irritated. To get back at him, you biding your time until he let his guard down, and then, is gonna shove your massive cock right up his ass and pound him into submission. Little do either of you know, your magical potential is in your cum. Each load you shoots into him seems to transform his body, making his ass grow slightly, and acting as an aphrodisiac, making his body more sensitive until he's overwhelmed with pleasure and he's rendered her cum addicted cocksleeve.