Posted originally on the Archive_of_Our_Own at https://archiveofourown.org/
works/3419357.
  Rating:
      Explicit
  Archive Warning:
      Underage
  Category:
      F/F
  Fandom:
      Shingeki_no_Kyojin_|_Attack_on_Titan
  Relationship:
      Krista_Lenz_|_Historia_Reiss/Ymir
  Character:
      Krista_Lenz_|_Historia_Reiss, Ymir_(Shingeki_no_Kyojin)
  Additional Tags:
      Masturbation, Oral_Sex, Femslash, Object_Penetration, Explicit_Sexual
      Content, Underage_Sex, Public_Sex, Consensual_Underage_Sex
  Stats:
      Published: 2015-02-23 Words: 1817
****** Toothbrush ******
by Sneeze_Meister
Summary
     "I, uh, was doing something very... private," Krista said, her blush
     feeling like it would melt her face. Ymir chuckled, her breath
     hitting Krista's ear.
     "Do you want me to do something very private to you?" Ymir asked, and
     Krista felt a chill run down her spine.
Notes
     Just a little idea I had.
She was in the bathroom again. For the third time this week. After practice she
quickly rushed to the bathroom and made sure no one was there. It would be so
embarrassing to find out there had been someone in there while she was doing
her... thing.
After Krista made sure there was no one in the bathroom, she closed the door to
the stall at the end and looked at the inside. Just a simple toilet, some paper
for it, and a metal box for hell time. Krista sighed and pulled down her skirt.
How come she had to run like that? The way she pumped her legs when she ran,
and her arms, God, her arms... Ymir was an absolute deity to Krista. In her
eyes, her body was absolutely perfect, as well as her personality. All her
flaws seemed to make her even more perfect.
Krista bit her lip hard when she thought about Ymir. She pulled down her
panties and kicked off both articles of clothing, leaving them rumpled on the
floor.
Practice for both the soccer team and the cheerleaders had just ended, with the
clock ticking just past seven. Krista wanted to head back to her room, but the
warmth in her body demanded otherwise.
Krista sat at the edge of the toilet, in a position so that her vagina was
easily reachable, and stared down at it, her face red. She had been coming to
this stall a lot more recently, and it was embarrassing. What she was doing was
embarrassing. But she couldn't help it. She needed the release.
Krista felt the first finger slip into the slit, and she bit her lip even
harder, enough to draw blood. She closed her eyes. She was no longer fingering
herself, Ymir was.
And she knew Ymir would fuck her.
Krista let out a gasp as her finger went deeper, and she imagined Ymir grinning
as she added the second. She would look up at Krista with those sly eyes and
finger her, hard. Krista made a needy sound as she moved her fingers around
inside of herself.
"Ymir..." she whispered, her voice on edge. Ymir would widen her smile and add
a third. Krista moaned at the third addition, and the fingers moved quicker.
The blonde's breathing was getting quicker and quicker, her heartbeat was
rapid. But she kept fingering herself and calling Ymir's name.
Then the door swung open, and Krista was thrust out of her wild fantasy.
Someone had entered the bathroom. She quickly shut her mouth and took her
fingers out. She kept as still and quiet as possible, hoping that the girl
didn't hear her.
Hearing the water rush, Krista slowly stood up and crept over to the crack in
the stall door, peering out. Someone from the soccer team was brushing her
teeth. She put it under some water for a moment before opening the toothpaste
container.
Wait a minute... This girl looked familiar. Krista realized with a sudden
adrenaline rush that it was Ymir. Krista covered her mouth with the hand that
wasn't down there and kept watching her. She leaned against the door.
And it swung wide open, having her trip and fall to the ground with a small
shriek.
She had forgotten to lock it! Oh, what a stupid girl she was! How pathetic! Now
she would be the laughingstock of the whole school! It wasn't fair! All she
wanted was a little bathroom time in peace, and it had to be ruined.
Ymir immediately turned around, just about to put a layer of toothpaste onto
the brush. She stared in surprise at Krista, who was looking up at her with her
bare bottom in the air, like in one of those rapper videos, her face completely
red. Ymir's cheeks tinted slightly.
And yet she didn't say anything. Ymir just stared at Krista as she quickly
stood up and covered her lower half, reaching for her skirt on the floor and
mumbling excuses.
"I-It's not what it looks like!" Krista began, her voice wavering and tears
running down her face. "I was just, um, just... using the restroom! I forgot to
lock and, uh, um, I uh..." Krista was trying hard not to fall to the floor and
sob.
Ymir still didn't say anything. Eventually, Krista was able to pull back on her
skirt, but forgot to grab her underwear. She glanced over at it, but then the
look on Ymir's face made her freeze. What was the brunette thinking? Krista
sniffled lightly.
Ymir then went into action. She walked forward, each step carefully planned out
and determined, until finally she was in front of the shorter one. Krista
gulped, wondering if Ymir was going to laugh in her face.
She didn't expect Ymir to suddenly lean in and kiss her.
Krista made a muffled squeak as Ymir pushed her against the wall and kept
kissing her hard. Krista looked over and saw that Ymir still had the toothbrush
gripped tightly in her hand. She closed her eyes and kissed Ymir back after the
initial shock was over.
She couldn't believe what was happening right now. She couldn't believe that
Ymir was now kissing her neck, nipping it slightly and making her moan. Krista
couldn't believe that Ymir actually liked her. But here the taller one was,
giving her a hickey. That had to count for something, right?
Ymir pulled away, and Krista pouted. Her facial expression put a glint in
Ymir's eyes, and she slowly leaned in to whisper in her ear.
"So, what were you really doing in the stall?" she asked in a husky whisper,
running her tongue along her ear. Krista shuddered. She'd spill all of her
secrets if Ymir continued.
"I, uh, was doing something very... private," Krista said, her blush feeling
like it would melt her face. Ymir chuckled, her breath hitting Krista's ear.
"Do you want me to do something very private to you?" Ymir asked, and Krista
felt a chill run down her spine. Ymir was asking for consent. She could back
out of this, but she didn't want to. She didn't spend an hour in the bathroom
three times this week because she didn't want it.
"Y-yes..." Krista whispered. She spoke so softly that she doubted Ymir could
hear her. She was about to answer again, but then Ymir hummed and pulled her
away from the wall, her toothbrush still in her hand.
Then, so quick that Krista didn't have time to register it until afterward,
Ymir pulled her into the stall. Her grip was strong, and it kind of thrilled
the blonde. Ymir shut the door and locked it, going and smirking at Krista when
it was done.
"Let's get private, then," Ymir said before sitting Krista down on the edge of
the toilet. Krista gripped the sides of it, trying to keep her balance as Ymir
got down on her knees. She tugged down the skirt so that it was at Krista's
ankles. Her blood roared in her ears as Ymir got closer to her vagina, until
finally she could feel her breath down there.
Krista closed her eyes, waiting for the pleasure, but she felt Ymir's teasing
hot breath pull away. She opened her eyes and saw Ymir wiggling the toothbrush
in front of her.
"You want this past your lips?" she asked, giving Krista a grin. Krista
snorted, then widened her eyes when she realized what noise came out of her
mouth. Ymir gave a chuckle.
"S-sure," Krista said. She's never been that experimental before, and finding
out that Ymir was is pretty fascinating to her. Ymir grinned at her voice, then
leaned in again. Krista closed her eyes, feeling her hot breath once again.
She felt the cylindrical brush penetrate past her lips, and she let out a gasp.
The toothbrush paused, but when Krista didn't make anymore noises, it slowly
pushed in further. She let out a low hum and opened her eyes.
Krista saw Ymir staring at her face, watching her expression. When their eyes
met, Ymir's steady gaze never looked away. Krista felt her body get hot. Ymir
licked her lips and slid the toothbrush deeper inside of her. Krista stiffened
at the pleasure.
Ymir took her move the wrong way and retreated, but Krista quickly grabbed her
hand. "No," she whispered, not trusting her voice. "Keep going."
Ymir pushed the toothbrush back where it was before, and Krista let out a moan,
letting go of Ymir's hand. Ymir slowly started to fuck her with the tool, going
in and out in a rhythmic motion. Krista gripped the toilet seat so hard that
her knuckles were white. Ymir began to go faster.
When Krista's breathing got really fast and she began to move her body in time
with the toothbrush, Ymir pulled it out. Krista whimpered and watched Ymir
slowly bring it to her mouth and erotically lick where it had entered her.
Krista shivered.
"You not done yet?" Ymir asked, her voice rough. Krista nodded. She wasn't
done. She wanted more. Oh, how needy she was being.
Ymir gave Krista a big grin before leaning in and licking around Krista's
entrance, chucking the toothbrush away from them. Krista gasped then moaned,
her voice echoing throughout the bathroom.
Krista felt fingers spreading her vagina, and when the tongue came in, she
practically screamed in pleasure. She bit her lip to keep her moans down so
that no one outside the bathroom would hear. Ymir pushed her tongue in deeper.
Each time Ymir sucked and moved her tongue around inside of her sent Krista
into waves of pleasure. She couldn't believe that oral sex was this satisfying.
After another minute of this agonizing pleasure, Krista reached her climax.
Ymir made a humming noise and pulled away, licking some of Krista's fluids on
her lips. Krista panted and leaned fully against the toilet, looking up at the
ceiling. This was way better than imagining all of this.
"That... was nice," Krista said in between breaths. She looked down to see Ymir
flash her a smile and get up. She dusted off her pants and helped Krista stand
up.
Krista got lightheaded from standing up too quickly, so she leaned against Ymir
for support. Ymir held her gently and stroked her hair, and Krista felt like
purring. Leaning up, the blonde kissed Ymir on the cheek, and Ymir looked at
her with kind eyes. Kindness wasn't something that usually occupied Ymir's
features, and Krista felt special.
After she got dressed, Krista picked up the toothbrush and handed it to Ymir.
Ymir looked down at it for a moment before tossing it aside. "Leave it for
someone else to come along and masturbate with it."
Krista laughed and took Ymir's hand. Ymir pecked her on the forehead, and
Krista leaned against her.
They left the bathroom hand in hand.
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