isn't against the rules!

Izuku was quick to maneuver next to his mother and make full use of Rule 12, his hands squeezing and kneading the doughy titflesh of the woman who gave him life. He made sure to brush his erect cock against Inko's thigh, triggering Rule 15 as he smeared precum on the plump meat.

"Izuuukuuu~" she complained "p-please take care of your erection! I know it's a rule that I have to let you touch me like this, but it's still so... soooo~ ooooh~" she began to drool, her mind swirling with lewd thoughts before she shook her head.

"Just shush, mom. Rules are rules~!" It occurred to him that he never wrote any rules explicitly requiring sex, but that simply made him more eager to sexually **** his mother. Her genuine reactions to getting fucked by her own son were a prize to covet; and if she reacted too negatively? Well, all he'd have to do is write more rules to **** her to comply.

As Izuku maneuvered himself fully behind his mother, his cock slid across Inko's fatty thigh and ass, eventually finding a home between her legs, with the shaft positioned precariously close to her womanhood. With a flex of his cock, his lower head swung up and thwapped against Inko's clitoris, coaxing a gutteral moan from the neglected MILF. Her knees gave out, causing her to crouch low and grind her sopping wet breeding hole against her own son's breeding rod. At the same time, Izuku's hands kept kneading Inko's massive mammaries with excessive perversion.

It became clear to Inko that her son was intent on fucking her! Possibly even knocking her up! While the rules made her think of his cock sexually, there was nothing in it that said she had to imagine herself as the one getting dicked down by Izuku. In her mind, the thing which aroused her about her son's penis were thoughts of it impregnating other women, not her! Then again, she'd break eventually. The fact she couldn't orgasm without his sperm inside of her womb, paired with their proximity, meant that it was inevitable... still, she dreaded the thought of ****, no matter how good it felt when her own flesh and blood molested her!

"I-Izuku, ba-AAHHYYYBEE!" Inko yelped as the tip of her son's thick, throbbing, virile penis pressed against her quivering folds, eager to return to the womb that created him. "P-please don't fuck me! I don't know is sex is covered under r-rule 12, but it's still ****..."

"Aww, c'mon, mom! What about Rule 19! There's nothing taboo about a little family bonding!" Izuku emphasized his point by sliding just the tip inside, his cock shooting a thick deluge of lubricating precum directly into his mother's pussy.

"B-but I, um... don't find the idea of **** arousing, sweetie. I know there's nothing wrong with ****, but I don't want this! I want you to breed other women, like Mitsuki or Katsumi!" Inko bit her tongue as Rule 18 reared it's head, but she went with it anyways. "P-please... don't breed me!"

'Hmm... I have a choice. I could **** her right here and now, and use the Rules to **** her to deal with it... or I could use the rules to alter her mind...' Izuku thought, his mind trying to decide if **** or common sense alteration was hotter. He knew he'd have to try both no matter what, but which one was best for Inko?