Rin quickly focused, there would be time later for her to admonish herself for her actions. At the moment she had to… hide said deplorable actions.
It made her feel sick to use her magecraft to hide her crime… but as much as she hates to acknowledge it… she felt a bit aroused as well. The complete control she felt was exhilarating.
Those thoughts in turn made her feel worse.
There truly was something wrong with her. Was it the penis… or was it simply her true desires? Was she just a degenerate deep down?
She quickly snapped out of those thoughts, lest someone else entered the bathroom and discovered her shame.
A plan quickly formed in her oddly clear mind. She projected a bucket and after making sure the bathroom was empty filled it with water and dumped it on Arata-senpai.
The water drenched her clothes and hid the stains of her watery cum.
Rin took a moment to stare as Arata-senpais's clothes tightly hugged against her skin.
She licked her lips as she felt her penis stir slightly.
She quickly shook off her growing arousal and undid the hypnosis, lest she is tempted further.
The girl slowly roused with her long eyelashes fluttering open.
"Arata-senpai. Are you okay?" She asked.
"What happened?" She groaned out.
"Someone left a bucket of water on top of one of the stalls."
Please believe it!
Arata-senpai then let out a moan of annoyance, "Ugh, I fell for that old trick. Like seriously."
She then looked down at her soaked clothes, "Gross I'm all sticky," she lifted her shirt and gave it a sniff, and made a face, "What did they put in this?"
Rin's heart raced at the sight. Was she going to be found out!?
The girl shook it off, "Well whatever, I have my gym clothes in my bag anyway."
Her heart calmed.
Arata-senpai stood up, grabbed her bag near the entrance, and rummaged through it. She then pulled out her gym uniform and promptly stripped.
Rin gulped at the sight of Arata-senpais's bare flesh. She could not deny that her senpai had a gifted body. Rin stared at her breasts for a moment. It looked like her lacy bra struggled to contain the mounds. Her eyes traveled lower to her generous hips and finally to the thing that could not be ignored, her senpai's massive ass. Rin's eyes could not be torn from the sight of Arata-senapi's underwear being devoured by her ass.
Did she have no shame!?
Arata-senpai turned around and looked amused once she noticed her staring.
She said in a teasing tone, "Eh, what's wrong Tohsaka-chan? You're staring rather hard~ I know I've seen you staring at Emiya-kun a lot. So do you like both~?"
Rin turned away embarrassed, someone saw her!
Arata-senpai let out a teasing laugh, "Hehehe, Your so cute Tohsaka-chan. There's nothing wrong with like both you know?"
Rin's eyes looked back and saw that Arata-senpai was wiping herself down with wet wipes.
"Always good to have these on hand, ya know?" she said as she wiped her breasts.
Rin gulped once more and looked away again. She could feel her penis tenting her panties.
A few minutes later she heard, "Alright all done!"
Arata-senpai was now dressed in her gym clothes. She had recently discovered that she found them rather… erotic for some odd reason. That may have been the result of ogling the track team for a bit.
She really was a degenerate, wasn't she?
"Thank you for staying with me Tohsaka-chan! Now, why don't I give you a little service~"
Arata-senpai then buried Rin's head into her breasts.
They were… soft. Rin didn't even attempt to struggle out of her grasp… something about Arata-senpai made her relax for some reason.
Her senpai pat her head and released her after a moment.
"I'll see you later Tohsaka-chan!" she then strutted out of the restroom and Rin couldn't keep her eyes off of her ass.
She looked back to the stall and down to her slightly tented skirt. It wasn't really that noticeable… but if she was going to be more proactive in managing her desires then she better start now.
She shuffled back into the stall intending to relieve herself with thoughts about Arata-senpai's ass.
She dropped both her panties and skirt and let her small penis spring outward into the air. Despite cumming so many times already it still was able to get hard. At least she had that going for her to make up for her size.
She gripped her penis with her index and thumb and found it was still slick with Arata-senpai's saliva. She quickly shook her hand up and down while she let her mind wander. Specifically about Arata-senpai's ass.
Not even a minute later she felt her orgasm build up. She thrust her hips and let out a shuddering breath as her watery cum spurt into the toilet. The feeling of orgasm wasn't as powerful as before… but it still felt really good.
With a sigh, she hiked up her panties and skirt feeling much better.
She should be able to make it the rest of the day now.
_________________________________________________________________________________________________
Rin sat in her workshop potion in one hand grimoire in the other. She was debating about what to do. She had committed a crime. She raped someone with her magecraft.
The idea still excited her and she hated it.
She eyed the potion bottle. All she had to do was drink it and her penis would be gone… but she went to so much trouble to gather the ingredients.
So much money was spent and if she takes this potion now it would have been a huge waste.
In the end, her magus mentality and frugal nature overrode her morality. She placed the potion back into its secure spot and opened the grimoire flipping to the bookmarked page.
The jewel studding ritual. She reviewed the information and committed it to memory. She cleared a part of her workshop knowing that it may get… messy. It was a precaution after she experienced the effects of the potion. She also projected and laid out a plastic tarp just to make sure.
She then pulled out her pendant. In her opinion, it was the best choice to use. She had been filling it with her magical energy for roughly ten years and its quality and energy storage were simply top-class. So the chances of rejection should be low. It should also kickstart her magical energy generation by a significant amount.
She removed the one-of-a-kind jewel from its setting and laid it on a carefully drawn circle. It still felt a bit like desecrating her father's memory to use this jewel in such a way but it was the best jewel she had access to and the ritual recommended using only quality jewels less there would be undesirable side effects.
She turned on her circuits and went through the process of inscribing the spell onto the jewel.
The first part of the spell. Gathering magical energy. It was simple enough.
The outer portion of the circle lit up and engraved itself within the jewel.
The next part of the spell was one of the more important parts. It would convert a portion of the stored energy into pure vitality that would then slowly leak out of the jewel into the body. This would nurture the body and encourage it to generate more energy. That energy would then be gathered by the jewel and the process would begin again but more potent.
A feedback loop and simply genius.
The middle section of the circle lit up with complex spell formulas and engraved itself within the jewel.
She wondered if her father would have used the method… No, he wouldn't now that she thought about it. It would be considered too vulgar for a proper magus to use.
She, however, had little choice.
She continued on to the final part of the spell. Power transferal. It would allow her to draw on the stored magical energy for her personal use and transfer some of the stored energy directly into another jewel. The direct transfer would likely not be the most efficient but would help in a pinch if she wanted to make a few potent disposable jewels.
The inner and final portion of the circle lit up and engraved itself within the jewel.
The jewel lit up as the spell settled within it. She held it up and could already feel it leaking vitality. It made her hand feel rather warm and a few aches and pains she didn't notice faded.
Useful.
But she didn't need it leaking energy at the moment so with a small prod of her magical energy that portion of the spell switched off.
Now for the next part.
She stripped and stood on the tarp.
This next part… may hurt a bit. She was a bit thankful the only magecraft Kirei was actually good at was healing as it will come in handy in just a moment. She tapped her penis and muttered a local anesthesia spell numbing the organ.
That should dull the pain.
She then laid the jewel on the base of her penis and muttered, "Here goes nothing."
It was time to bind the jewel to the flesh.
She spoke the spell through grit teeth as the process was painful despite the area being numb.
Thankfully it was over rather quickly. She looked down at her penis and her family's prized jewel gleamed proudly as it was embedded into the organ. The jewel was almost a tad too large to fit as her thin girth barely accommodated it.
Hopefully, that would change soon.
She then turned on the spell and shuddered as her penis felt warm. The jewel glowed and engorged veins bulged outward. They pulsed powerfully as pure vitality spilled into her penis and testicles.
Her male organs throbbed and she collapsed to her knees in pleasure. With each beat of her heart, her penis pulsed and grew just a bit longer and a tad fatter. She felt her balls churn and grow in her sack stretching it to accommodate the growing orbs.
With one more mighty beat of her heart, her organs pulsed powerfully and she bucked her hips and came hard. The first rope was thin and watery. The next was a milky white. The next is a bit thicker and whiter. And the final rope of cum was glue-like in its consistency and color.
Rin let out heavy breaths and looked down at her penis. It was much bigger and no longer looked like it belonged to a child. It was a proper adult penis… that throbbed powerfully with need.
Well, she already made a mess so might as well, right?
She gripped her new penis. Not with two fingers but with a full fist. She smirked feeling a bit of pride in her newly enlarged organ.
Now to relieve some pressure.
She slid her hand up and down slowly at first but picked up the pace as she began to relish the pleasure.
She quickly achieved orgasm and let out rope after rope of thick white seed. It landed heavily on the tarp and collected in small pools.
Rin had a small smile on her face as she looked at her now potent seed.
She then looked down at her still throbbing length.
Well a little more couldn't hurt, right?
She continued to pump out at least half a dozen more loads before she stopped herself.
The tarp she laid out was covered in strings and pools of thick gooey semen.
__________________________________________________________________________________________________________
Rin never noticed that the following pages of the grimoire were stuck shut by a sticky substance. Said pages held an important warning.
Do not use more than one jewel. Regularly drain energy from the jewel.
A heavily charged jewel may cause side effects.
Side effects include:
Excessive growth in the penis and testicles
Discoloration of the penis and testicles
Abnormal growths on the penis
Excessive Smegma production
Excessive Semen production
Abnormal Semen consistency and potency
Massively increased Libido
Lowered Inhibitions
Increased Sexual Aggression