Posted originally on the Archive_of_Our_Own at https://archiveofourown.org/
works/2763914.
  Rating:
      Explicit
  Archive Warning:
      Graphic_Depictions_Of_Violence, Major_Character_Death, Underage
  Category:
      F/M
  Fandom:
      Tokyo_Ghoul
  Relationship:
      Kamishiro_Rize/Kaneki_Ken
  Character:
      Kaneki_Ken, Kamishiro_Rize, Kirishima_Touka, Banjou_Kazuichi, Tsukiyama
      Shuu, Itori_(Tokyo_Ghoul), Uta_(Tokyo_Ghoul), Nagachika_Hideyoshi, Kanou
      Akihiro, Aogiri_no_Ki_|_Aogiri_Tree, Yomo_Renji, Yoshimura_(Tokyo_Ghoul),
      Nishio_Nishiki, etc.
  Additional Tags:
      Horror, Graphic, Sexual_Content, Unhealthy_Relationships, au-ish,
      Alternate_Universe_-_Canon_Divergence, Manga_Spoilers, Psychological,
      Angst, Tragedy, Gore
  Stats:
      Published: 2014-12-13 Chapters: 1/? Words: 2924
****** Obsessed ******
by DVP21
Summary
     It wasn't odd that occasionally a ghoul would raise a human for their
     own purpose. So how would things be different if Ken Kaneki was one
     of them? More than that, raised to be a human shield and sword for
     Tokyo's resident Binge Eater.
Notes
See the end of the work for notes
He could still remember the day he first met her. He had been 10. All in which
he’d spent with Tanaka-san. He'd been taught to fight humans and ghouls alike.
As a human, his strength still couldn't compare, but he was a competent fighter
despite his age and small stature. He'd been a curious child and asked Tanaka-
san about a lot of things. Things like why they constantly moved place to
place? Who was the girl had to protect? Why did he have to protect her? Why
couldn't he? To simple general questions. He’d been content with living with
the man all his life even though the man was distant and difficult to deal with
on a social level. What he didn't like was that he was being dumped on a door
step to protect some girl.
“Huh? Where are you—“ Tanaka-san had already disappeared from sight before he
could finish inquiring him. “…going?”
He sighed before raising a fist to knock on the door. He wanted to please
Tanaka-san after all. When he comes back he’d show him that he kept this girl
safe just like he wanted. However, he flinched in surprised when the door
opened before he made contact with it.
He blinked in surprise when he saw the person who opened the door. It was a
small girl who couldn’t be any older than him. Her straight purple hair reached
her shoulder blades, and her eyes of similar colour looked slightly void. She
wore a black pleated, knee-length skirt and a simple red t-shirt. He thought
her to be extremely pretty. Now only if she would smile. But wait? Was he
supposed to protect this person?
“Tanaka-san left already.” A statement not a question. She could smell his
lingering scent, but it wasn't strong enough for him to still be nearby.
“Should you really say your dad’s name?” He smiled. He’d wait for Tanaka-san to
return. In the meanwhile, being with a cute girl wouldn't be too bad. He felt
the heat of his cheeks.
“He’s not my father.”
He blinked in surprise. “He’s not? But he’s so adamant that I protect you.” His
confusion grew as he was trying to assess the situation. And he’d been so
excited to meet Tanaka’s daughter.
She had been locking the door after they both had entered when she voiced,
“Protect me? What a joke. I can protect myself just fine.” Her protests weren’t
particularly whiny or unenthusiastic. It bordered on boredom and apathy. “I
thought he was bringing lunch. The idiot probably would do something this
stupid, though.”
“Don’t call Tanaka-san stupid! He’ll come back. I know he will. He took me in
and raised me when no one else would. He’s a good person.”
The girl stopped in place. She didn’t even deem it necessary to look back to
him. “Is that what he told you? You really are stupid.”
“W-What do you mean?”
“He does things for himself, no one else. He harvested you from a human family
for his own interests. And now, he probably won’t be coming back.”
“He’ll come back. I know he will.”
“Keep being delusional.” She left the room, and because he was unacquainted
with the living space he followed her into another room.
He was amazed with what he saw. A whole room filled with books. Fiction and
non-fiction books, novels, encyclopaedias and the like shelved on custom made
shelves which filled the entire walls of the room. There was a desk, slightly
off centered—more to the left—to study or read. Only a meter away from the wall
at the opposite corner of the room was a large, comfy looking, arm chair.
“Are these all your books?” he asked in wonderment. He was still taking in the
room. He did like books. When Tanaka-san had something to do, which he couldn’t
accompany him, he got left at the library. At first it was boring as he just
wanted to be back with his caretaker, but learnt to love it. Plus, it gave him
more questions and excuses to talk with the man.
“I’m the only one living here, so yes.”
He wasn’t very good in social positions. He didn’t have any friends, and the
only person he ever really spent time with was Tanaka-san. “Alone?”
“Is that a problem?”
“A-ah. Um, no.” From how she was acting, he was surprised she hadn’t attempted
to kick him out yet.
“Just don’t get in my way.”
“Y-Yes!” He kept staring at the girl with surprised. “Um actually,” he
continued. She looked up from her book unimpressed. “I’m Ken Kaneki. Thanks for
letting me stay here.” He lightly bowed. He was bad in social situations, but
he’d still forgotten something as simple as introductions. He looked at the
girl expectantly. “May I ask your name?” he finally asked when he was only met
with silence.
“I don’t have one.”
“Eh! Everyone has a name.”
“Not me.”
“Then I’ll name you.”
“Don’t be stupid.”
“But everyone should have a name. Let’s see…” Kaneki looked up at the ceiling
in thought. “How about—“
“Rize Kamishiro.”
“So you do have a name.”
She didn’t reply, but in all honesty she didn’t want to be stuck with a name he
gave her. Who knows what name she’d end up with.
“Nice to meet you, Rize-san.”
 
Three years had passed and plenty of things had happened in that time. Most
notably that Rize had been right that Tanaka-san had never returned. They got a
few rare letters and packages, though. The small house had been paid for, so no
one knew that children lived alone with no supervision. But while he did care
for Tanaka-san a lot, he was no longer his most important person. Rize had
replaced him. He still didn’t know why he had to protect her or from who, but
he’s gladly do it.
Rize was a fairly quiet person. She also shared his passion for books.
And by now, after thirteen years of watching ghouls eat humans, he should have
adjusted, but his freak outs were still happening on occasion or at least very
unsettled. Mostly from the thought that he could have easily been in the meal’s
place. He identified as human as he was one. However, the people he’s been
close with has only ever been ghouls. So unlike many people’s perceptions of
black and white between species, he was greyer in his thoughts about them.
Rize seemed to also to bear no strong opinions of either, but it was also hard
to get her interested in anything. She was nonchalant a lot of the time, but
sometimes it seemed like she was searching for something. For what he didn’t
know. He knew her from being around her, not by being a confident. Rize didn’t
need one of those. From the three years he recognized her strength,
independence, and aloofness. She was a good actress and could be whoever she
wanted. She had a lot of potential to do what she wants yet she has no
ambitions. While it was because of these traits that he couldn’t do much for
her, they were also some of the reasons why she was so calming to be around.
More importantly he had become obsessed with her. It wasn’t instantaneous. At
first it was a minor boy crush. Then he began to like her more and more and
appreciated her for who she is. Then she became his most important person,
overriding Tanaka-san. He fell deeper and deeper until he became obsessed. At
this age, the obsessiveness was small, but it was already peeking through.
Rize didn’t have a care for her body. She was just becoming a teen, but still
she had no care in the world. Because of this being nude didn’t bother her. It
did effect Kaneki, though. His face would always turn so red when she dressed
in front of him or was bare after bathing. She did pay a little more attention
to her looks. She could admit that her features were nice, and give herself a
few years she could probably use that better to her advantage. She could use it
now, but since she was still developing and young, even if she could attract
someone she was limited as to who would act on their urges.
Acting was easy. It naturally came easy to her which was a bonus, but just
observing people in real life and books, she became better at reading
situations and the appropriate and most effective actions in different
scenarios. If she was going to use her attractiveness she would have to
practice a bit beforehand. Luckily, she had a dummy she could use. She stared
as the freeloader stared enraptured with her. She didn’t even think he knew he
had a zoned outlook when he stared at her too long. That or a blushing mess.
But truth is a matter of perception and Kaneki was happy that Rize started to
give him a little more attention. He blushed when her breasts pressed against
him, or that she was beginning to be a bit more affectionate like occasional
hugs. In all honesty, he just thought she was trying to be a more interactive
person since she spends so much time alone. He knew he should just tell her how
he felt. He blushed as he thought about his dream last night. It had been quite
explicit. He wanted it to come true, but feared the worse. Maybe she would kick
him out. He wouldn’t be able to handle it if he couldn’t see her as often.
It had taken him quite a while, but eventually one day he finally muster the
courage to say something.
“Rize-san.”
“Yes, Kaneki-kun.” It was how they’d always addressed each other. He spoke her
given name with –san and she’d use his surname with –kun.
“I… I’ve like you for a while.” He fumbled with his words causing the situation
to become more awkward. He gaze slowly lowered with every word.
He felt a hand push his face up, redirecting his line of vision. Rize was tall.
Currently 2-3 inches taller than him. He know looked into her pretty eyes.
“I…” She got closer to him. “Like you too.”
His chest felt ready to burst open. He was relieved to know she felt the same.
He’d never let her go. But he also felt odd because she shared his feelings. It
was probably just the doubt that lingered within him as if he’d wake up from a
dream any moment.
“Kaneki-kun… I…” Rize closed the distance between their lips. Kaneki remained
still in shock. He wanted to respond but didn’t know what to do. Granted, Rize
didn’t either, and with his newer borderline stalking tendencies, he would know
otherwise.
She backed her face a little before giving her second attempt at a kiss. This
one was softer than the last. The last one had their noses bumping slightly and
the kiss was hard. The second kiss was more like there was no emotion in her
second kiss, only soft relax lips touching as if they were just there.
“Sorry. I’m no good at this.” She kiss him again. Kaneki had finally accepted
that this was reality and kissed back.
He then felt something wet on his lips, and opened his mouth by reaction. He
hadn’t been ready for her tongue to slip in his mouth, but he wasn’t
complaining. Slowly, his fantasies and desires played in his mind as he sucked
her tongue. He wasn’t sure if he was doing it right, but she wasn’t complaining
so he hoped it was the case.
In the middle of the teenage trial make-out session Kaneki lost his balance and
they landed on the floor. He ended up biting her tongue and he yelped as he hit
the floor.
When he realized what happened he apologized profusely.
“It’s okay.” And it was. Her healing abilities had already healed her tongue,
and she had a brief taste of her own blood.
It was then that he noticed that Rize was on top of him, and he had a good view
of her breasts (again). He cursed his hormones for so easily exciting him. He
could feel his growing problem. “I should probably go.”
“Go? Why?”
“Ah…” What was he supposed to say?
“Oh.” She knew! He panicked. “It’s okay?”
He was breaking down inside. His thoughts in never ending tangents as Rize
pulled down his clothing. With her strength, the fact he was sitting on the
floor meant nothing. He desperately wanted to cover himself. Dreams were one
thing, but his heart was beating so hard, he didn’t know if he’d live much
longer. She touched the tip experimentally. He whimpered. She then stroked his
shaft with a single finger and shivers ran down his spine. He wanted her to
keep touching him.
She then used her whole hand and stroked a few times, hardening his member
further. He wanted to explode. It wasn’t fair. She had this effect on him and
he was hopeless. In a pained voice, he said. “Don’t worry. I’ll deal with it
myself.”
“But you love me right?”
“Of course.”
“Then it should be fine.”
He wanted to question what would be fine when her actions answered quicker. He
began panting as she licked the tip with uncertainty. It was then that he
realized that he was putty in her hands. He’d be who she wanted him to be. He’d
do what she wanted him to do. As long as he could stay with Rize. She licked
and suck. His moans mixed with whimpers. Unfortunately, the experience was cut
short when he released early.
He couldn’t look her in the eyes immediately after, but he was happy.
 
There sexual interactions continued over the next few years. He would say they
spent more quality time together, but that wasn’t necessarily true since they
lived together. Can’t spend more time together than that.
Some things never changed, though. Kaneki still occasionally whimpered from
pleasure, Rize still had control no matter how much he tried otherwise. He fell
deeper and deeper in his obsession and it was more and more obvious.
“R-Rize,” he breathed as she rode him. Her hands holding his hand in place to
avoid him making his own moved. He leaned down and their lips met in a heated
kiss which had greatly improved with time.
“Kaneki,” she broke off the kiss and marked his neck instead as she continued
to rock. Kaneki was trying his hardest to rock his hips too from his position,
but it was harder than it looked.
“Rize,” he begged wanting her to let him do more. She smirked and allowed him,
only for him to come a few moments later. It just wasn’t fair.
After sex, they sat in the kitchen drinking coffee. He wasn’t allowed to make
it because she said it didn’t taste that great when he made it. He tried to get
her to teach him, but she wouldn’t budge saying they’d waste too much coffee in
the process.
“I’ve been thinking.”
“Yes, Rize?” Kaneki looked at her expectantly.
“I think it’s time to move.” She looked out the winder a few feet to her left.
“Move?” he asked confused. She’d never expressed her want of a change in
scenery. “Sure, where are we going?”
“I’m going.”
“Yes, and I’m following you.”
“Go somewhere else; I’m going on my own.”
He was sure his brain shut down at the moment. He couldn’t be hearing her
right. “I love you! I’m not leaving you.” As an extra measure he added, “I’m
supposed to protect you.”
“That idea was ridiculous 5 years ago, it’s still insane now. You’ve hardly
gotten stronger, and my strength still far surpasses yours. I don’t need a
protector.” Rize took a sip of her coffee. “I just want a bit of space. A
change of scenery.” It was true. She was increasingly bored and wanted to
continue her search of fulfillment elsewhere. She didn’t have ambition and she
was hard to please, but even she wanted an enjoyable life. She was still
searching for that. Something that would ignite her. Make her feel alive.
“That doesn’t mean I can’t be there with you.” Kaneki was desperate. Rize knew
it. She didn’t want a lost puppy following her. It was irritating.
“Just, I need some time alone to figure things out.” She had to play this
write. Right words. Right actions. Make the other feel secure. That what they
know is in no danger of collapsing. “Think of it as self-searching. You’ve
spoken about school a few times. It’s not my thing, but don’t let me hold you
back. If you want into a university, you’ll have to graduate from high school.
You should be starting in April. With your knowledge and a bit of forgery it
will be easy to enroll.”
Kaneki’s fists clench. Rize was more important than school. Stupid idiot!
“You can also get stronger in that time.”
Almost there.
“It won’t be forever. We’ll be together again. I promise.”
Hook. Line.
“And we can keep in touch.”
Sinker.
He was reluctant. Incredibly so. But if he wasn’t being abandoned and she
wasn’t in danger, how could he tell her no.
“Fine.”
 
Rize wanted to live near the sea so she moved to the eleventh ward. Kaneki
moved to the 20th ward, taking all the books with him upon Rize’s insistence.
They’d see each other again.
End Notes
     Not exactly how I originally planned, but it was flexible enough to
     work I guess. Not really used to writing sexual scenes if you can't
     tell XP
Please drop_by_the_archive_and_comment to let the author know if you enjoyed
their work!