Found on barachan.
Plot(by Aniki):
Our MC is Hajime Tsukishima, he's a (high school?) speed skater, just before the championship, he found out that he was bleeding "down there" *wink wink* So, without telling his coach about his "condition", he secretly goes to a clinic to see a doctor. The doctor say that he'll have to examine the area to diagnose, Hajime is reluctant, but he took off his pants and got on all fours on the bed, (and not on an examination table...^^) his ass facing the doctor.

Hajime tells the doctor to stop staring at his ass, but the doctor replies how am I suppose to diagnose without examining it. He then starts to tease Hajime's anus with his finger, while saying that he has a huge ass. He then starts to push his finger into his anus, and just as his finger penetrated that tight ring of muscles, Hajime screams. The doctor apologizes and takes out his finger. The doctor stared at his anus for a while and say that he's finished with the examination, and slaps his ass.

Hajime puts his clothes back on and asks the doctor if he's fine, the doctor said that he has some scars from anal tearing, that's why there's bleeding. (I wonder what he's doing to cause anal tearing...^^) Hajime is really worry about it, so the doctor tells him that his colleague's hospital is running a clinical trial on a new examination method and are looking for patients; they are on the final round of clinic trial. The doctor asks if he's interested, the examination is free, and there's a small payoff for participating on top of that. Of course, hearing that it's free and on top of that, you get pay, he agree to do it. The doctor gives him a referral, and ask if he's free tomorrow? Hajime said he'll take a day off from practice for it.

The next day, Hajime goes to the hospital for the clinical trial, after seeing that it's at a big hospital, he thought to himself, he can rest easy if he's being treated here...

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The doctor in charge and the technician explains that here, they'll have him on the treadmill and track his heart and pulse rate. Then they tell him to take off his clothes, stripped down to his underwear, he was told to stand on the treadmill. The technician applied the electrodes onto his body, while the doctor strapped the oxygen mask onto his face. They started the treadmill, and told Hajime to match the pace of the treadmill as it speeds up and keep looking at the monitor in front of him.

On the monitor, there's straight porn, he asked about it, but the technician just said that it's part of the examination. As time goes on, he's started to get hard, and started breathing heavily. Seeing this, the doctor said it's time to slow down. At the end of the test, the doctor asked if he's tired, and Hajime just said it's nothing compared to his usual training. The doctor said, so you train "down there" as well... and Hajime blushes, he tries to stammer out a response, but the technician say it's natural. They gave him a change of clothes and told him to get changed, after he's finished, go to the next exam room. So Hajime do what he's told, and steps out of the examination room after getting changed.

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Hajime enters the room, with the Male nurse there greeting him and tells him to lay down on the bed. The nurse said there are some preparation to do for the ultrasound examination of his inguinal region (groin area). Hajime asks where, the the nurse pokes his groin to emphasize where. He then asks what preparations, and the nurse smiles and say, pubic hair removal.

The nurse tells him to relax and pulls down his pants. Hajime's still half-hard from the previous "examination", the nurse said that he has a nick package, and comments on his pseudophimosis. (Though because of the censoring, we can't really see clearly...) The nurse starts to apply the shaving cream and starts shaving. While shaving, the nurse starts to play with his dick, and asked if he's ever compared with his friends, Hajime said not erected. The nurse continues his assault, and Hajime starts to leak a lot of precum, he then use the excuse of "cleaning his dick", took a tissue and wrapped it around his dick. Afterwards, he continues to jerk him off, and just as he was about to cum, the nurse stops. Told him to put on his underwear and go to the next room, Hajime did as he's told, though he looked a his dick, which sparkles, for a bit.

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In the next room, the technician told Hajime to take off the gown and lay on the bed, his back towards him. Then technician then said he'll be applying some gel on the area, and that it'll be a bit cold. The technician applies the gel onto his sides, Hajime's a little ticklish, but bares with it. The technician then takes the sensor, and tells Hajime to bare with it. During the procedure, Hajime is a little shocked, but bares with it.

The technician then tells him that he's going to examine his groin area, and told him to take off his underwear. Hajime takes off his underwear and lay on his back. The technician is very liberal with the gel, and applied it everywhere around his dick, Hajime gets hard from the administration. The technician then takes the sensor, and moved it around, but then placed it on his balls. A large dollop of precum emerges from his slit. The technician smirked at this, and said that he's finished, Hajime gets up and starts putting his clothes back on. After he's finished, the technician tells him that next is an interview, and a examination of his rectum, he is to wait outside, and they'll call him once they're finished with the preparations. Hajime goes out of the room, and sits on the couch.

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Hajime gets back into the room with a sketchy looking doctor there. The doctor then tells him it's time of the rectal exam, and told him to take off his gown get get on the bed. The doctor penetrates his anus with his finger, told him to stop moving, and grabs his head with his other hand. As this continues, Hajime started to feel good, the doctor asked if this was his first time, and prodded his prostate, Hajime cried out. The doctor said, nothing feels out of the ordinary, and asked having his prostate prodded feels good?

He then takes out his finger, Hajime's panting, with precum leaking out of his flaccid dick. The doctor pulled Hajime's legs towards his chest, exposing his anus upwards. He then grabs a moist tissue and wiped his anus, then lay him back down, and moved onto his dick. After he was finished, the doctor say, nothing's wrong, onto the next test. Hajime is still laying there, panting, so the doctor sits down on the bed and told him to tell him what's wrong, it's a doctor's job to listen to his patents. Hajime blushes, and gets up, puts on his clothes and leaves.

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An orderly brings Hajime to exam room 6, the doctor tells him to lay down on the bed the same way as with the rectal examination, on his side with the knees towards his chest. The doctor grabs the colonoscope and said this won't hurt, I think, so relax. He puts it in, after a while, Hajime realized that they're just playing with his ass, and that he's starting to feel good from it. The doctor tells him to look at the monitor, and Hajime turns his body towards it. He blushes at the though of his insides being exposed and gets a little hard. The nurse noticed something and points it out the to doctor.

The doctor said it's just a little hemorrhoid, nothing to worry about. The nurse then points to the prostate, and the doctor directs the colonoscope towards it, and Hajime's dick spurts a little. After fool around a bit, the doctor yanks the colonoscope from his rectum, surprising Hajime. He tells the nurse to wipe him down, when the nurse was finished, the doctor declared he has a case of blue-balls. Hajime covered himself and tries to deny it, but the doctor say that today's last exam is sperm extraction, so bare with it. Hajime blushed at hearing that.

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Hajime enters a new exam room, with the nurse telling him to take off all his clothes and get on the examination table. Hajime complies, and when he's on the table, he's so embarrassed that he closed his eyes. The nurse tells him to stretch his arms out to the side, as he did so, the nurse cuffed his arm to the table. The nurse assures him about the cuffs, and starts the examination of his reception to touch and pain. He takes a brush and moves it all around his body, recording down his result as he goes. At the end of the touch session, the nurse focused on his dick.

For the pain session, the nurse took acupuncture needles and pinned it all over his body. The nurse tells him that they're finished and it's time to move onto another place, next is the sperm extraction. The nurse commented that he's very hard, and that he's going to cum a lot, Hajime agreed. They moved to another room, and the nurse told him to wait as he go to get the doctor.

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Alone, Hajime couldn't wait and started to jerk off, lose in the motion, he didn't even notice the doctor has come in. The doctor grab his hand to stop him, and told him to use the Tenga. Hajime saw that the doctor has a paper bag over his face and thought finally, a perverts came!! The doctor asked him why he's here, and forced Hajime to say that he's here for his sperm to be extracted. The doctor pretends to not hear what he say, and Hajime repeated it while blushing. The doctor said that I'm a doctor, so please say it in the technical term. So Hajime repeated it, (in the technical term with keigo)

The doctor say yes, and starts sliding the "extractor" onto his dick. Hajime started feeling weird, but then the doctor takes out a dildo, and rams it into his ass. Due to the anal simulation, Hajime cums, with the Tenga cup shooting off. Even though he's just cum, the doctor said to continue with the "examination". He came at least 3 more times, twice in different Tenga cup.

The doctor, with a nosebleed gave Hajime his pay and showed him to the door. Hajime stood there for a while, in the end, he brought some hemorrhoid cream with the pay and when home.