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Stein's Experiment	By : Akita-Wolfsbane Category: +S to Z > Soul Eater Views: 3566 -:- Recommendations : 0 -:- Currently Reading : 0
Disclaimer: I do not own the Soul Eater fandom in any way! And I'm making NO money off this fanfiction.

Chapter List
- 1-Stein's Experiment
- 1
Dr. Stein was contemplating a new experiment he could perform on his ex-weapon partner, Spirit. This experiment was unlike anything he had done before. It would really test their friendship and may put an end to it. Despite that fact, he continued mixing the elixir for Spirit and every once in a while cranking the screw in his head. He chuckled lightly to himself when the elixir was finished. Now he just needed to find a way to slip it to Spirit without him noticing. Luckily today was vaccination day at the DWMA.

Not all the students and staff needed vaccinations, in fact most of them didn’t. But it would be the perfect way for Stein to cover up what he was giving Spirit. Stein slipped a syringe of the elixir into his lab coat and made his way to the nurse’s office in the DWMA. Spirit was already sitting on the bed in there waiting for the nurse.

“Oh my beauty I have been waiting for you! Please make me all better!” Spirit said as he hugged Stein at his waist; thinking that he was a gorgeous nurse.

“Nice to see you too Spirit,” Stein said plainly.

Spirit immediately recognized the voice and quickly let go of Stein and scurried back to the bed.

“What the hell are you doing here Stein?!”

“The female nurses felt like you sexually harass them so Lord Death told me to administer your vaccinations.”

“Fine, get it over with then.”

“Whatever you say, Spirit.” Stein pulled the syringe of elixir out of his pocket. “Alright, you only need one shot this time and then we’re done.”

Spirit closed his eyes tightly as Stein approached him with the syringe. One quick little prick in the skin and it was over.

“Come by my lab if you start feeling weird,” Stein said as he threw the syringe away.

“Okay, talk to you later then, Stein.” Spirit quickly left the room unsuspecting of what Stein had just done.

Stein stayed in the nurse’s office for a little while, giggling to himself, before heading back to his lab. He couldn’t wait until the elixir to take effect and Spirit to come over. This devious plan was something he had thought about for a while now and now it was finally going to happen. A smile crept across his face as he sat there waiting for the moment.

Soon there was a knock on the door which caused Stein’s smile to grow wider. Before he opened the door he collected himself so that Spirit wouldn’t get suspicious right away. He opened the door casually to find Spirit standing there quite exasperated.

“Well hello Spirit, what’s up?”

“What the heck did you give me?!” Spirit came in and sat on the spinney chair that was there. “What the heck is going on with me?!”

“I don’t know what are you experiencing right now?” Stein walked up to Spirit after he shut the door.

“I can’t stop breathing hard, my temperature is through the roof, and my…” Spirit blushed. “…My cock is hard for no reason…”

Stein bit back his smile and knelt down next to Spirit to see that all he had said was true. This mean the elixir had worked wonderfully. Stein removed his glasses and set them on the desk next to them. He then proceeded to take off his lab coat and drape it over the computer on the desk. He got closer and closer to Spirit.

“Stein, what are you doing?” Spirit asked in an alarmed voice.

Stein just snickered softly, “Don’t worry; everything is going to be fine.”

Stein placed his right hand on Spirit’s inner thigh and smiled. He slowly moved his hand to the large bulge in Spirit’s pants. He steadily unbuttoned and unzipped Spirits pants and pulled them to Spirit’s ankles.

“Seriously Stein, what the hell are you doing?!” Spirit wanted to fight against him but somewhere in his subconscious, something prevented him from doing so.

Stein just continued to smile as his hand returned to the bulge once again. This time only a small piece of clothing was between his hand Spirit’s manhood. He gently, one by one, slipped his fingers into Spirit’s undies and slowly slid them down to where the pants were. As soon as the underwear was removed, Spirit’s stood up before Stein. This time he put his hand on the cock itself and began to tease the tip with his thumb by tracing light circles around it.

Spirit’s face became as red as his hair. He couldn’t find the will to fight against what Stein was doing. Something deep inside him was telling him that this was right. A soft moan slipped from his lips as Stein continued to tease his tip.

Stein leaned down to where his face was hovering above Spirit’s hard cock and began to lick the tip gently; doing the same circles he had done with his thumb. Every once in a while he would bring his tongue right over the opening on the tip. He got more into it the more he heard Spirit moan. So much so that he could feel himself getting hard within his own pants. This was a new feeling for him but it felt great anyway.

Stein used his free left hand to unzip his own pants and throw them down to his ankles along with his underwear and kicked them off completely. He then let go of Spirit’s manhood and picked him up and carried him to his bed. He laid Spirit down and pulled off his shoes to pull of his pants and undies. He quickly discarded them to the floor and pulled off his own shirt and threw it next to them.

He crawled into the bed, over Spirit, and smiled softly at him for a moment. He could see that Spirit was a little freaked out but that didn’t stop him. He leaned down and began to kiss Spirit slowly and passionately on the lips while discarding the rest of Spirits clothing to the floor.

“Stein… What has… gotten into you?” Spirit panted as the kiss broke.

“I don’t know exactly,” he answered as he put his hand on his chest. “I think it’s what you call a heart.”

Spirit was surprised by the answer at first but ended up smiling and giving in. “Alright then, I’m all yours.”

Stein’s smile started out soft but then went devious again. He leaned back onto his knees and picked up Spirit by the waist and turned him over. He licked his fingers on his right hand before he cupped Spirit’s soft butt. He slipped his two middle fingers into the crack to the entrance. He played around the hole a little to tease Spirit before he stuffed his fingers into it.

“Hnnng….. Steeeiiiin….” Spirit moaned softly. Stein just snickered and shoved his fingers even further into Spirit. Steadily he moved them in and out and all around inside. He steadily started to do it harder and faster. He could see Spirit biting the blanket on the bed to muffle his moans. The smile on Stein’s face grew wider as he continued to finger him. He could tell that Spirit was almost ready for the next part.

He pulled Spirit up on to his hands and knees while still fingering him. He pulled his fingers out of Spirit slowly and put his hands around Spirit’s waist and put his hard cock at Spirit’s asshole. He prodded at the entrance to get a feel for it. He teased Spirit a bit by only putting his tip in and then pulling out. After a couple times of doing that he didn’t stop with just his tip in, he thrust the whole thing in.

A loud moan escaped Spirit’s lips as he was penetrated by Stein. He continued to pant, and his already hard cock got a little harder and began to throb.

Stein felt euphoria of feelings he had never felt before but they all felt so good to him even if he didn’t understand them. He began to do the pelvic thrust to Spirit. Each time he went into Spirit he would pull Spirit toward him by his waist. Beads of sweat began to form on both their bodies as their body temps rose.

Feeling Spirit’s hole clenched around his cock felt amazing to Stein. He began to pick up the speed of his thrusting. He could hear Spirit moan with just about every thrust. His cock began to throb within Spirit warm insides and began to feel like it was going to explode.

“Ssstein…I can’t hold it… much longer…” Spirit panted referring to the pressure within his manhood.

In all honesty Stein was about to burst as well within Spirit. With one final thrust into Spirit all his muscles clenched as he came within Spirit. At the same time Spirit came all over the bed and himself. Stein slowly pulled out of Spirit with some white stuff on his cock. They both collapsed next to each other, still breathing a little heavy. They didn’t really care at the moment that they were laying in Spirit’s cum.
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Stein's Experiment