Introduction:

This is a true story from when I was a young man working in Japan

I can only speculate what the Headmistress of the school wants to see me about, but I don't think it is going to be good. Not that I did anything directly wrong, but circumstances did get a bit out of control and may be the cause of her summons to her office.
Let me bring you up to speed. I am an American living in Japan. I have studied karate in the U.S. Since I was 7 years old and have become quite proficient. I had long wanted to study karate in Japan and with the help of my karate master, a Japanese immigrant to America, had been accepted for training at the same dojo my master had trained in his youth. Knowing that I would need to support myself during the three years I planned on being in Japan he also helped secure a position for me as an English teacher in a very exclusive, very progressive, private girls school just outside of Tokyo. As I had studied and was fluent in Japanese it was a great job and paid more than enough for me to live modestly.
One day I was approached by Ms Takemoto, one of the teachers I had been friendly with, to help her in her health class for the senior girls.
"Of course, I would be happy to help you, just let me know what you need." I told her. And I meant it sincerely.
"That is wonderful of you!" she gushed. "Please, just meet me at my classroom for the 3:00 pm class. If you could get there a few minutes early we will have time to set up."
Ms Takemoto was a diminutive lady that I guessed was in her late forties. She had been teaching at the school for years, and had graduated from the school herself. She had a reputation as being a very enthusiastic instructor, even after all her years of work.
I arrived outside her classroom at ten minutes to 3:00 and knocked on the door before entering. Ms Takemoto came scurrying out of her office that joined the classroom and greeted me with a big smile. "Come into my office. The girls will be coming into class soon and I want to make sure we are ready." She took me by the hand and led me into her office.
"So how am I going to be able to help you with your class Ms Takemoto?" I asked, as she closed the door behind us. I could hear students coming into the classroom already.
"Well," she started, "as you know, in this class we study health as it relates to the girls. As they are all seniors we want to prepare them for when they leave the sheltered environment of the school and venture off to university. We are currently studying human sexuallity and, as a part of that, the human body. That is where I need your help. Her face beamed with a broad smile that seemed a little hopeful.
"Uh, OK," I stammered, "just what is it you want me to do?"
"Well, as you are young and athletic, I thought you would be perfect for what we need. I need a model to show the girls the male anatomy." She said, maintaining the same smile, as if she had asked me to wipe the chalkboard.
"Wait, what? Exactly what are you asking of me?"
"I would like for you to disrobe and allow me to use you as a model to show my girls it what the male anatomy looks like in real life, not just pictures in a text book. Believe me, it will be very discreet. You will be standing behind a screen so that your identity will not be known to the students. You will just have to stand there, nothing else will be required."
"You want me to get naked in front of a classroom of young girls? I can't do that! Those girls are ten years younger than me!" I protested, although I don't know what the age thing had to do with it, but it was all I could come up with.
"It is quite disappointing that you are reacting this way, I took you at your word that you would help me and have prepared my study plan accordingly. I have taken precautions to keep your identity unknown. I do hope you will reconsider, it is important for the girls education. There is also an monetary consideration as well. You would be able to receive additional compensation for this work."
That kind of got my attention, I could always use extra money. Now that the initial shock of what she wanted me to do had worn off, and since it was going to help line my pockets, I was starting to get past the false modesty that I first had. Frankly, I really didn't have a problem letting young girls see me naked, it had just taken me by surprise.
"Alright," I said, "I'll do it, but just because I like you Ms Takemoto and I said I would help. What should I do?”
"Thank you so much Steven! I appreciate this more then you know. I will leave now and get the class started. Remove your clothing and when I knock on the door please come out. I will have the screen in place so no one can see you so just walk up to it and I will take it from there."
She shut the door behind her and I started to undress. I was nervous and excited at the same time and hoped that my excitement didn't manifest itself in me getting an erection. I kept telling myself to keep all those "impure" thoughts out of my mind. I checked myself out as best I could in a mirror hanging on the wall. Everything looked OK, nothing there that shouldn't be and everything else look like it should.
Then the knock came. I pulled open the door, took a deep breath and walked into the classroom, behind the protection of a fabric screen stretched across a wooden frame. The lighting and fabric allowed me to see the girls on the other side but blocked them from seeing me, except for my bare feet and lower legs. Ms Takemoto was admonishing the girls to be respectful and reminding them that this was not something to be giggling over.
"Today we are going to examine the male reproductive system. We have a live model so that you can all see what, in real life, the male genitalia looks like." She told the class. And with that she slid up the bottom panel of the screen, exposing me from just below my chest down.
"That's not what my brother's looks like." Said one of the students. With that all of the girls started snickering and whispering and poking each other.
"Girls!" barked Ms Takemoto, "if you can not act with decorum we will not continues. Now then, this is the penis." Turning, getting her first look at my equipment, Takemoto not only gasped, but jumped back slightly, causing the classroom to fill with laughter. I am, in all modesty, pretty well hung. My flaccid cock hangs at 8" and grows to just over 11" when erect. Yes, I have measured it, or rather, one of my girlfriends did.
Somewhat regaining her composure, Ms Takemoto straighten her skirt grabbed a wooden pointer and a ruler and pressed on, lecturing about the male anatomy, describing the different parts of the penis, describing the difference between being circumcised and not (I am), all the while using the pointer to indicate the specific part she was referring to. On a few occasions the pointer made contact, making it all that much harder for me to not get harder. Then she started talking about testicles and, using the ruler, lifted my pecker out of the way so that my balls were observable. I was getting more and more difficult for me to stay calm and not get a boner. I was trying to distract myself in any way I could think of, closing my eyes and thinking I was in front of my mother, trying to recite the alphabet backwards, anything I could think of. Ms T then pulled the ruler away, allowing my cock to flop back down and continued to talk to the class about sexual intercouse and the like. Still I avoided getting an erection until I spied one of the girls in the back row with the front of her skirt up and her hand down her panties, slowly touching herself, while being blocked from Ms T's view by the students in front of her. That was where my will power ran out.
I could feel the blood rushing into my cock, there was no turning back. The girls' eyes were all transfixed on my growing cock, all of them growing wider as my dick got bigger. Some of them looked worried, but some had great big smiles on their faces. "Teacher!" shouted one of the girls, "it is getting bigger!"
Seemingly confused for a moment, Ms T turned and looked, or more like she stared, as my erection grew. Meanwhile the girl in the back row had increased the pace of her fingering herself, causing me to get even harder faster. Within a minute I had a full-blown, throbbing erection. Many of the girls sat with their mouths wide open in disbelief of what they were seeing. Others were chattering back and forth, pointing in my direction with one hand and partially covering their face with the other, but still peeking through their fingers.
Suddenly, the girl sitting closest to where I was standing reached out with her index finger and slid it up and down the length of my cock. She reported to her classmates that it was very hard, and very hot. With that, Ms T swatted the wayward girls had away, at the same time striking my cock and sending it bouncing up and down. This sent the girls into a fit of laughter and Ms T into panic mode. Turning a shade of white, she instinctively reached out and grabbed me to stop the movement of my cock. Catching herself, she quickly retracted, but I could see her physically shaking. In response to the slapping and grabbing, my cock convulsed a little, forcing some pre-cum out. As it started dripping off my dick, hanging there like a crystal droplet, I saw the girl in the back row with her head back, and her eyes squeezed shut, in the middle of an orgasm. This caused my cock to convulse again, forcing even more pre-cum out. Several of the girls screamed "What is that!" As the string stretched nearly to the floor. Having gathered herself again, Ms T reached down and caught the droplets in her fingers and wiped the end of my dick, causing it to repeat with another drop.
Turning towards the class, Ms T rubbed the liquid between her fingers, allowing it to stretch between her thumb and index finger, as if to demonstrate its viscosity. She calmly explained to the girls that it was similar to ejaculate and it's purpose was to act as a lubricant to aid in having intercouse. One of the girl's hands shot up, "What is ejaculate teacher?", she asked with a curious look on her face.
"Ejaculate it the fluid that comes out of a man's penis to transport the sperm produced by the testicles." Ms T was still trying to keep the conversation on an intellectual level. "Rubbing the penis, generally within the woman's vagina, but also by other means, causes the male to shoot ejaculate out of his penis, thus impregnating the woman if she is ready to conceive. Of course that is only if the vagina is used."
"What else can be used?" asked another girl.
"Well, rubbing the penis with one's hand or hands is one method. Putting the penis in one's mouth, referred to a fellatio, is another.
The last reference was met by a group squeal of "Eeeww!"
"What does ejaculate look like?" came another question.
"It is white fluid, thicker and more plentiful than the pre-cum."
"Can we see Ms Takemoto?" Asked a couple of the girls at the same time.
"I don't think that would be a good idea at this time ladies."
"Please teacher,"one of the girls pleaded, "it is a part of human nature! We should know as much as we can!"
The girl who had been fingering herself spoke up, "Our parents would not be happy knowing that our tuition was only buying a partial education." She had a devilish look on her face, as if she had used a variation of this ploy before. It clearly got Ms T's attention.
"If our subject has no objection, then perhaps it would be beneficial."
I wasn't going to object, that was for sure. While all this was going on my cock was oozing pre-cum in copious amounts. Ms T turned towards me and scooped up another droplet, this time rubbing it on my cock to lube it up. Then getting on her knees in front of me, she began to jack me off, first with just one hand, then with both. Slowly she worked her hands up and down the length of my cock, sometimes letting her grip twist around it. She would let go with one hand and while the other continued stroking she would knead my balls between her fingers. Occasionally one of her fingers would graze my butt-hole causing me to jump slightly and the pleasure.
While this was going on, all the girls had moved in closer to get a good view of the action. One got directly behind Ms T, looking over her head in rapt attention, her mouth, like many if the other girls, agape, their eyes as wide as saucers. The one that had been friggin herself earlier was back at it, now standing up and closer in. No one but me seemed to notice her going at it as they were all watching Ms T run her hands up and down my cock.
I was trying to hold back for as long as I could. I think there was a little pride thing going on in my head. A bit of showing off if you will. After holding out for as long as I could I started humping back against Ms T's handjob. She made note of it to the students, telling them it was a sign that I was getting near to ejaculating. This caused them to move in even closer and, with a determined look on her face, Ms T increased her grip and quickened her pace.
I could feel the cum boiling up from my balls as they slapped against my ass and the hands that were around my shaft. I humped back harder, the head of my cock emerging from her hands a dark purple, swollen and in need of relief until I could hold off no more. In a groan of ecstasy, I shot my load, the first rope of cum expelled so forcefully it actually shot over Ms T's head and landed all down the front of the unfortunate girls standing behind her. The girl screamed in surprise. Ms T was taken by surprise, her mouth open, the second blast hit her directly in the face,half of it hitting her forehead and half of it going into her mouth. Two more spurts found their mark on her face as well. The cum on her forehead was now dripping over her eyes and joined the rest on her cheeks. The entire class gasped with surprise, then fell silent, watching as she milked the last traces of spooge from my still hard cock and let it drip onto the floor.
Using her fingers, she wiped as much cum as she could from the young girl, even while neglecting her own face. Finally, someone produced some tissues and Ms Takemoto was able to clean up the mess, but only after she discreetly tasted a sample of my juices and dismissed the class.
The girls tittered amongst themselves as they filed out of the room, the one that caught my first load crying in embarrassment but being bucked up by some of the others. The one that had been fingering herself was the last to leave. She pulled her hand from her panties, sucked her fingers clean and with them gave a little wave goodbye in my direction.

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