Posted originally on the Archive_of_Our_Own at https://archiveofourown.org/
works/12802506.
  Rating:
      Explicit
  Archive Warning:
      Underage
  Category:
      M/M
  Fandom:
      ワンパンマン_|_One-Punch_Man
  Relationship:
      Genos/Saitama_(One-Punch_Man)
  Character:
      Saitama_(One-Punch_Man), Genos_(One-Punch_Man)
  Additional Tags:
      Professor_Saitama, Student_Genos, Skype_Sex, Anal_Fingering,
      Masturbation, ?_-_Freeform, Genos_is_15, Saitama_is_21, Alternate
      Universe_-_No_Powers, Saitama_still_built_af, Bottom_Genos, Top_Saitama,
      Do_Seme_and_uke_count_in_skype_sex??????, Why_do_I_keep_making_underage
      fanfiction??
  Series:
      Part 8 of 30_Day_OTP_challenge_(Abandoned)
  Stats:
      Published: 2017-11-23 Words: 2103
****** 30 Day OTP Challenge - Skype Sex ******
by LorikMijelix
Summary
     Because of their age difference Saitama wasn't ready for actual sex
     with his student/boyfriend. So the two come up with a plan to work
     around it.
Saitama and Genos had been in a secret relationship for some time now. The two
finally came to realize each other’s feelings afterschool, while Saitama gave
him extra lessons. When they both ended up confessing to one another at the
same time, they laughed. And kissed, of course. Despite their apparent love for
the other, Saitama never tried to do anything sexually unless Genos urged him
to. Most of the time it ended up in a quick hand job.
While the two kissed, and touched, Saitama never let his partner touch him
below the waist. Saying something about feeling too guilty to let him do it, no
matter how badly Genos wanted it, he would respect his lover’s choice.
Although, Genos being the teenager he was, he needed some form of release
besides and hand job, or jerking himself off in the bathroom. He has proposed
to return the favor, or do even more to Saitama, but he would always freak out
and push him away. Genos didn’t like that his lover was so scared to touch him
just because of their ages, so he finally came up with a solution, one that
didn’t involve Saitama touching him in sexual ways and feeling guilty about it
immediately afterwards. Although, his plan meant that he could touch the other
man either, but he was willing to give it up for this. When he finally worked
up the courage to propose his idea to his lover, he made sure to do it when
Saitama felt a little less guilty about their nightly activities. Said
activities always took place in the elder man’s apartment, so neither of them
had to worry.
“Sensei,” Genos began
“Saitama,” The other attempted to correct.
“Can we try what is known as skype sex?” Genos proposed watching the other
man’s eye widen significantly, and his jaw drop. All Saitama could do was
stutter, trying to find the right words to counteract Genos’ own.
“Genos, when I mean I don’t want to try anything sexual right now, I mean
literally anything.” Saitama replied with a shaky voice. Genos gave him a
confused look.
“But Sen- Saitama, you always touch me in sexual ways, but you never let me do
the same for you.” Genos argued, eager to get his lover to comply. Saitama
pursed his lips thinking of something to say. It only resulted in a heavy sigh
though.
“If we do this, it does mean we don’t have to touch each other…” Saitama paused
clearing his throat, “in that way?” He finished. Genos nodded frantically with
wide eyes, drawing another sigh from the other. “I’ll do it,”
Genos smiled and hugged his teacher tightly, and exclaimed, “Thank you so
much!” Saitama hugged him back with a worried smile on his face.
 
When Genos arrived home the next day, he was far too excited for his own good.
His Uncle, Kuseno was away at work, and was going to be until the next day. He
was so eager to have some form of sex with Saitama. While they couldn’t touch
eachother, he could still aleast see Saitama’s private areas, his face when he
was experiencing complete pleasure, and his face when he finally climaxed,
coating himself in his own cum. When Genos initially thought about it, he would
get rock hard instantly, so he tries to keep him mind in check.
Genos grabbed his phone out of his pocket and message Saitama, asking him if he
remembered his skype log in information. While waiting for his teacher, started
up his laptop and pulled up his skype. He logged on and had everything ready in
the morning before he left for school. He put the device on his bed and sat
cross legged on the bed. He finally heard the familiar ding of his phone, and
picked it up quickly.
“yea” was the only thing he wrote. Genos looked up to his laptop screen and saw
that Saitama was online. He quickly clicked the call option next to his
username, imagining his lover jump at his quick actions. Saitama picked up
almost immediately. Genos could see the familiar wall that is behind his futon,
which he assumed he was sitting on.
“Hey,” He said with a small smile.
Genos smiled back with a “Hello, Teacher,” Saitama chuckled lightly on the
other side.
“You don’t need to sound so formal, Genos,” He said, “Especially since we’re
doing you know… This.” Genos nodded with a smile. Saitama continued with a
question, “Are we just going to masturbate in front of each other, or………” He
trailed off as Genos gave him another nod. Saitama froze up a little, but tried
to calm down more.
Saitama buried his red face in his hands, letting out a frustrated groan. Genos
finally spoke, “Teacher, should we start by removing our shirts?” Saitama
peeked through his fingers, and gave him a small nod. Genos removed his own
first, Saitama following suit, but with less grace. Genos didn’t care though.
“Now what?” Saitama asked with a worried tone. Genos just stared, unsure of
what to do either. Although Saitama hadn’t looked at the screen until now, he
never got the chance to see his lover without a shirt. While Saitama never felt
this way about any other teenager his age before, seeing his young body bared
to him and him alone like that, he felt something snap.
“Genos,” Saitama called his name to grab hi attention, his head snapping up to
meet the younger one’s. Genos could see the change in him, just from looking at
him, and he gulped audibly in anticipation.
“Touch yourself.” He finally finished, seeing the younger one’s eyes widen at
his commanding tone. He raised his hands up hesitantly, and rubbed his own
nipples, feeling them harden under his touch. He let out a small whimper at the
new sensation, and the way he could feel brown eyes watching his every movement
through the screen. He pinched the two buds, rolling them in between his thumb
and index finger. Genos let out a small moan, and bit his lip to try and stay
quiet.
“I mean down there, Genos,” Saitama spoke up again, with a small smirk. “Also,
don’t try and keep in your voice, I want to hear you.”
“Okay,” Genos replied, his voice sounding breathier than expected. He layed
down on his bed, and lifted his hips to pulled off his pants before his lover’s
voice reached his ears.
“Keep your underwear on for now,” Genos complied, and pulled off only his
slacks. He sat back up, but couldn’t look at the screen, not with his obviously
hard length trying to escape it’s confines. When he finally did look back at
the screen, he was greeted with the sight of Saitama’s hand on his flush cock.
Seeing it for the first time, made him imagine how it would feel to have it
inside of him, and for it to fill him with Saitama’s cum. His own member
twitched at the idea.
“Genos, I want you to lay back down and touch yourself through your underwear.
Can you do that for me?” He asked in a voice as smooth as honey. Genos
complied, laying back down on the bed, and reaching a hesitant hand down to his
erection. He palmed himself lightly through the fabric, and tipped his head
back on to the sheets of his bed, messing up his blond hair even more. He could
hear the squelching of lewd on the other side of the call, telling him that
Saitama must have grabbbed some lube while he wasn’t looking. Genos’ breathing
increased as he palmed his erection to the sound of Saitama stroking himself.
“Teacher, can I please,” Genos began, only to be cut off by a very quick ‘yes’
from the other. He quickly gripped the waistband of his boxers and pulled them
off, sighing in relief as his erection sprang free. The amount of precum
dribbling out of the top was enough to act as a form of lube. Genos let out a
low moan as he touched himself, remembering how much his lover liked to hear
his voice. The sound of the two stroking each other, panting, and moans were
the only things to be heard between calls. While Genos couldn’t see Saitama, he
could see him, stroking his hard erection. Genos remembered all the times he
masturbated with Saitama on his mind, and decided to do the same thing he
always did.
Genos brought two of his fingers to his mouth, and inserted them. Licking in
between them, imagining they were his Sensei. He purposefully made loud moaning
sounds through his fingers to make the other more aroused. Genos let out moans
of Saitama’s name slip from his mouth multiple times. When he deemed his
fingers wet enough with saliva, he pulled them out, a small string still
connected to his mouth.
He brought one of the two fingers down to his aching hole, and rubbed the tip
of it around the rim. “Do you like it, Saitama? The way my hole is trying to
suck my finger in? Do you wish it was yours?” Genos said with a smug tone,
hearing the other curse loudly. He let a loud moan rip from his throat as he
pushed the single digit into the tight heat. He slowly pumped it in and out of
himself, until he heard Saitama say something
“Can you put another one in?” He asked with a low grunt following suit. Genos
responded with a moan and let the second finger slip in along with the first,
letting out a hum of approval. He let the two sit in the tight heat for a while
so he could get used to the feeling. While he’s done it before, it takes a
little while for him to get used the sensations again. He slowly started
pumping the digits in and out, hoping Saitama liked the way his hole tried to
clench back around his fingers even after they were removed. He could hear his
lover groaning quietly in the background as he watched his fingers move in and
out. Genos couldn’t help but let out more moans that he normally did, due to
the fact that the man he loved so much was actually watching him. Watching him
finger himself, and stroke his hard cock, just for his eyes, and his eyes
alone. He could feel himself getting close, so he quickly moved his fingers
around, obviously searching for the spot that would make him see stars. Once he
found it, his back arched beautifully, and a loud moan erupted from his throat.
Genos rubbed that spot over and over again, soon adding a dry third finger to
increase his pleasure. The dryness made it tough, but he eventually made it in,
making the third one stroke his prostate with the others. Genos could feel some
saliva drip out of his mouth, and make its way down to his bed sheets. He
didn’t care though.
As Genos was abusing his prostate, Saitama was busy trying not to finish right
away. The sight of his lover’s tight hole clenching around his fingers, and his
other hand quickly moving up and down in a rythmic motion on his cock, made him
harder than ever before. Even if it was through some computer screen. He could
see Genos speeding up his ministrations, and listening to his moans becoming
louder and more high pitched, Saitama knew he was bound to be close to
climaxing. He was so desperate to cum with his lover, and to watch him finish
on himself, he sped his hand up. Stroking his cock quicker than he ever had to
before. Saitama bit down on his fist to keep his grunting and groaning in
check, so he could just hear his lover’s beautifully sinful voice.
Genos finally let out a loud cry, as long ribbons of white covered his bare
chest, and even parts of his face. Saitama groaned loudly, as he came shortly
after, but he managed to catch majority of the mess in his hands. The two took
a while to come down from their orgasmic highs, and Genos eventually heard
Saitama speak up from the other end.
“We should clean ourselves up and go to bed. I’m really tired now,” Saitama
sighed. Genos let out a small ‘okay’ as Saitama went to end the call.
“Teacher,” Genos began, making the other pause. “I love you.”
Saitama laughed, “I know. I love you too, Genos,” Then he heard the bleep of
the call being ended.
Please drop_by_the_archive_and_comment to let the author know if you enjoyed
their work!