Invitation from Ilya

Shirou was happy in last few days as he spent time with saber,sakura and rider combined.

There were three things that left illya,rin,zouken and medea.

He already have plans for all of them except illya because she is a wild card.

But he snapped out as he heard someone ringing the bell.

He stood up and went to porch to open the door and found a maid in pure white standing infront of the door.

She was wearing as all white dress and even though her head piece hides it her white hair can be seen easily.

She bowed respectfully and offered a letter saying"Dear lord shirou.Lady illyasviel has invited you for meeting between siblings.You can bring your servant with you.But you have to come alone".

After reading the letter,shirou was confused because it didnt tell him that much.But he gambled on it saying "please lead the way".

Saber and sakura wanted to stop but he stopped them saying"No problem.Iam just meeting my sister.Dont worry sakura,i will take saber with me".

Sakura reluctantly nodded her head as shirou and saber followed the maid into a car.She whispered saying"Secretly follow them rider.Only act when senpai's life is in danger".

A wave of air answered her as she went inside to do her chores.

/

Shirou stepped out of car and marvelled at the site of the castle.

The maid respectfully opened the way for him as he was greeted by a whole lineup of maids as thy bowed at him.

Suddenly a ball of white hair slammed into him saying"Thanks for accepting my invitation big brother.Take a bath and we will have some dinner".

Shirou dumbly nodded at her overhappy attitude as the maids motioned him to follow her as he caught a glimpse of berserker helping with setting the table.

The maids separated shirou and saber into seperate bathrooms much to sabers protests as they locked the door behind them.

Shirou was in tense as they locked the door but suddenly got a hardon seeing what happened.

All the maids that got inside with him stripled down naked as their pale bodies glistened due to the moon that just came up.

They obediently removed his dress and offered him a bath worthy of a king.

Shirou already have an idea on what illya is doing and just went on with the flow.

/

They all sat for dinner as illya chatted with him rather cheerfully.

From what he gathered,illya brutally killed the 'grandpa' golem for lying to her and took control of the einzbern family hence making her the sole head.

She exclaimed that she is also dropping out of war in favour of shirou and allied with him since berserker also dont have a wish.

Slowly a smile crept on shirou's face as he genuinely enjoyed chatting with his sister as they finished the food.

He was about to leave but illya tugged on his dress saying"Can i please spend time with my brother tonight.Pleasee".She looked rather cute while asking that while using the sad puppy eyes.

That was a critic hit for both shirou and saber as he called sakura about the situation and get settled for the night.

/

It was midnight as shirou scolded himself again for droping his guard again.

He went to bed with illya by his side cuddling with him but found himself unable to move in the middle of night.

Moon light illuminated the room as he saw illya sitting on top of him with a see through lingerie as she grinded her hips on him.

She looked at shirou saying "Sorry for this shirou but listen to what i have to say".

She looked at him in daze saying"I love you shirou.Both as a sister and a lover.You can call me sick but that is my feeling.Also its not wrong since we both are not blood related".

She sped up her grinding and continued saying"So please stay with me.I don't have much time to live.I dont have busty bodies like my mother and rider.I dont have the ability to get pregnant.But i will still offer you everything i have.This mansion,the maids,the whole einzbern treasury and power even their family crest.So please dont leave me ever.I dont want to be lonely".

Illya was crying half way through as she was **** to hold on to her last remaining relationship.

Shirou got shivers looking at her as she was releasing some massive yandere brocon vibes.

But she was wrong about something,she dont have to go this far.All she have to do was ask him.

He finally managed to get free from bindings and hugged illya and consoled her saying that he would never leave her ever under any circumstances.But he sternly scolded her not to use the binding spell on him ever again.

Their hug slowly turned into a kiss as shirou kissed her small lips tenderly.

Illya moaned into his mouth as shirou's hardon poked her pussy through his pants.

Shirou was confuaedas he felt hot for some reason as illya slyly replied"i also added some aphrodisiac into the food brother".

She immediately slipped out of his grasp and used her hair to cut his clothes and immediately started licking his cock.

Shirou moaned in pleasure at the taboo feeling he is geting as illya licked his cock like a lollipop.

The size difference was eaily noticeable as illya was basically hugging his cock dearly and massaging it.

The taboo came from the fact that illya is a loli.A legal loli of 18 years.Technically she is his older sister but it seems like she want to stay as little sister.

His cock throbbed signaling that he is about to cum as illya stopped saying "please control yourselves brother.I want it inside".

She pushed him on bed and placed herself on top of shirou's cock and gulped in anticipation as she slowly lowered herself.

Shirou winced in pain as her pussy was too small for his cock but illya gritted her teeth and forcibly moved every single inch down with more work.

Illya was ag her limit as she was unable to lower herself due to pain as shirou suddenly held her shoulders and pushed the last few inches.

Illya screamed in pain and pleasure as shirou's cock slammed into her womb and started cumming inside her.

Shirou gasped in pleasure as the entrance was too much for him and released his load as her pussy clamped on him nice and tight.

Illya was still in orgasm as her body twitched happily while she stayed their on his cock trying to get to reality.

Shirou suddenly got hard when he spotted that his cock's outline can be seen from outside through her skin as her body was too small to fully take it inside.

Shirou suddenly grabbed her hips and started slamming in and out as illya screamed in pleasure as his dick was streching her pussy to its limit.

It hit Gspot every single time as her eyes rolled back every single slam.

She thanked her homunculus body as any girl of her size would mot be able to handle the size difference

She came again and again as her body was unable to keep up with shirou.

Shirou was also gasping in pain an pleasure as her pussy has locked his cock inside with a tight clamp and was refusing exit untill he is fully soft.

So he showed no mercy and fucked her vigorously untill he became fully soft.

Illya fainted after 4 hours or so as shirou still used her body like a cumsleeve all night.

Shirou was panting due tk exhaustion as his cock finally became soft enough to exit her pussy as he sat down and marvelled at what he has done.

Illya was completely broken sexually as her small pussy was gaping at the size of his cock.

Her stomach was enlarged with cum like she was fully pregnant as her body worked overtime to push the cum outside her body.

Shirou became instantly hard at seeing her loli body with enlarged stomach full of his cum but calmed himself as he will do more harm to her now so he simply laid beside illya and slept.

Unknown to him,he was using his powers unconsciously as every single one in the entire castle felt horny for some reason.