Extras - Oyakodon

Shirou opened a door to illya's bedroom as he had a plan with her.

He saw illya's body lying on top of irisveil body naked as she was panting in lust.The grail took the form of Irisveil for the task as she wanna teach her daughter more about how to please her brother.

Shirou instantly stripped naked already hard after seeing the mother and daughter pair as he positioned himself at his sister's entrance.

Irisveil smiled at shirou saying"Go wild dear.I already trained her to withstand you".

Shirou never even stopped for confirmation as he suddenly slammed into illya's pussy and started ploughing into it.His cock already grew atleast 2 more inches during past months as he can easily see a bulge on his sisters stomach.

Normally it would have dangerous for a girl her size but illya is a homunculus.She can withstand more.

Irisveil flipped illya over and hugged her close as shirou continued to destroy her small pussy.

Her mind began to break at pleasure as she unconsciously started sucking on her mother's breast which elicited a moan from irisveil.

This made shirou more horny as he removed himself from illya and started fucking irisveil.

Illya's pussy felt empty due to lack of cock as she whined and shaked her ass begging"Please big brother.Fuck me more".

Shirou then left irisveil pussy and went for illya again as she started screaming in pleasure.

Both mother and daughter started begging in turns as shirou also took turns fucking each hole . It was actually a fun experience to feel different age pussies,especially that of a mother and daughter.

He was already super close as he removed himself from the older pussy and started blasting everything into the younger one.

Illya's eyes widened in surprise and pleasure as enormous amounts of rich semen entered her pussy filling her bare womb.

But she suddenly felt something wrong as her command spells began flaring due to excess amount of mana as her body convulsed in pleasure and among others things.

Illya's mind was unable to keep up with the sensations as she slipped into a small pleasure coma.

Shirou slowly removed his limp cock from her and fell back in exhaustion as irisveil turned back into black grail and supported him so that he can sit up.

He looked over his sister's **** body which looked like she is pregnant with a bloated stomach as he turned to black grail asking"is that enough?".

The black grail smiled cruelly saying"Wow.I know you are jaded but not this much.Dont you feel bad for her?".

Shirou simply used a spell to clean himself as he stood up saying"I dont care.Its a part of bigger plan.Now use her body as we planned and dont mess it up".

The black grail saw shirou leave the room as she looked at the body of illya and said"Well you should feel unfortunate for this.But iam pretty sure you cant hear me.Dont worry. It will be painless".

Her body started glowing as illya's body resonated with her but she suddenly stopped and thought"Well...Everything will be gone anyway. No one will blame me for having some fun".

Suddenly a huge cock much bigger than what shirou have grew between her legs as it twitched happily after seeing the body of illya.

The black grail loomed over illya positioning her cock at the already gaping pussy intending to destroy it even further by using her body as a onahole.