Author's note:

Hey, I know the situation between Krista and our Captain was getting steamier. But I just want to share that I also enjoyed Ymir's existence in this story. I would really like to prolong the story just to include Ymir's thoughts and point of view, but right now, I just want to follow the original plot of this story when I wrote this just for past time.

My first written smut will come up soon, I promise you.

Chapter Three

"Their Compatibility"

Naked?

"I - I have to get dress c-Captain," she said in a low nervous voice.

Her hand that was gripping her towel pressing the fabric to her chest, she's afraid that at any moment the fabric may fell. Will he tell her about the payback, because her imagination was giving her a hint about where this is all going? Her stomach flipped from side to side. She felt sweet, amazing. . And weird down her belly.

Is this all happening? Is she not dreaming?

He's looking at her, his eyes were preaching of what we all call desire, the warmth on his digits run to her palms. Reminding her that Humanity strongest was still a man that was not made of stories, and Then she felt that he tightened his grip.

It made Krista hold her breath.

Fuck, now he is strangling her fingers to pull her closer. What the fuck is he thinking? Levi wants to close the distance between them now that he has a closer look at her body, she's so delicate that he thought she'll get hurt if he lounges himself to her like a hungry beast. He hated the fact that he is like this again. Like he is not in control of his will, he just wants to do things to satisfy his mind.

Why is she so damn tempting in that small body? And while he's staring at her innocent round eyes, her pale white complexion here in the dark was kind of blurry sketch, the lines of her collar bone, and the scent of her soap made him agree that he's willing to forget his damn reputation just to be with her tonight.

Now he squeezed her entire hand, filling each space between her fingertips with his digits... And it just fit so fucking perfectly like it was made for him. Just like how the knife fits on his hand from the very first time he held it.

Then out of the blue, the clothes that were held between their hands fell on the floor, and just like how fast he decides in the critical matter, Levi immediately gripped her whole hand like there was no time to waste. And his stomach hurled inside out when he felt her hand tightened on his hand.

They were now holding hands together.

Krista felt comfort when she felt his grip. Her heartbeat normalized when they held hands together. Like they made an understanding that they wish to stay like this... She never felt this way when they both landed on the wall at first. But right now was different for her. She was not annoyed and somehow she felt encouraged to give up herself to the Captain.

Just let the towel fall on the floor and he'll take care of you, Krista.

Oh, walls.

Or was she just imagining this feeling? She pressed her legs together as she felt more entitled to move forward.

There was something about him that was so inviting.

She knew what he wants, and Levi was not blind to see what she also wants. He can feel the pull between them. He just wondered, did Krista deserve someone like him, an older entity that knows nothing about affection? What if she will expect more, what if he's just assuming that Krista wanted to stay like this with him?

What if Krista thinks that she's been harassed?

And there it is, he's now questioning himself if he still wants to hold on to his thoughts about her. Was coming here a mistake? Does he prefer to stay with four eyes and with his squad while guarding the two captive titans? Yeah, what would they say if they discovered that he's dedicating his time just to see Krista Lenz sleeping in these quarters alone?

Thanks to Arlerlt's sly mouth, he discovered that Lenz will be staying alone in this area. Levi made an applauding excuse just to come here and see if it's true.

And he's right.

Krista's so damn alone.

He looked away from her; he has to avoid making trouble with this girl. The feeling that he feels when she's around is not clear to him. And it might affect his future decisions.

He let go of her hand...

Even it feels ripping his flesh; he chose to give up the fire that was flowing in his veins. . .

She catches her breath like she never even breathed while they are in between of a protest. He picked up the clothes and gave them to her. When she immediately held on to the clothes, the Captain pulled his own hands back to its side, leaving her hands hanging in the air.

He was now looking away from her.

Was he disgusted about her? Did he realize that she's not that deserving?

"Please, get on your clothes. You were showing me more of your under skin," he said and turned away. Like a slap on her face, Krista's feeling subsided immediately. Maybe there was nothing to expect. Maybe she was the only one desiring for this to continue.

"My under skin? You're the one who's looking hard at me.," she's back of being herself...

Nervous, panicking, and conscious about her attire.

"Tch as if I'll eat you. Well, I mean, I can eat you literally. You'll love it and I'm sure you won't regret it."

Now, what happened about holding back here Levi?

Levi asked himself. Why was he telling her that he'd eat her? Fuck. Was it because he already engaged his feelings to her? What feelings exactly? He looked at the other side of the darkroom to avoid her sight. To stop himself, to convince himself that she was just like the other girls. That He was not sexually attracted to her. That there are more deserving guys for her.

"You're such a pervert" Krista speaks out.

"Oi oi, it's not my fault; you are taking your clothes on so slow. Get on your clothes! Idiot. Clean this mess you made and get a candle." he said and laid down on the bed, he used his arms to cover his eyes, to make him stop himself from looking at her.

Because he wanted to hold back, even His body tensed when he hears her voice.

"Well, at least you come out there you know. This is my room and that's my bed. There are rooms here that are intended for higher ranks like you, so would you mind stepping out here Captain? Now get the hell. . OUT!" she said in an ordering tone.

Damn, Levi felt the urge to follow what she is ordering now. But he didn't move on the bed.

"First of all my office is locked. I don't have the keys and I can't break in there. The Commander forbids me to kick doors. But, anyway, feel free to share a bed with me for the rest of the night. You don't have to wear those clothes, anyway" he said while hiding his flushed face from her.

Good damn thing that it was dark. He even felt his dick getting hard.

Fucking towel.

Krista doesn't know what to say. He clearly stated what kind of payback that he wants now. Will she agree to it? Is this the prize she is expecting for wanting to see him?

"Now you're talking about the damn thing. I owed you nothing, you maniac," she said

"Remember it or not, I just told you, there's no avoiding me when we meet. You will just regret it if you push me away," he said while staring at the ceiling.

"Fine! I'll get dress in the other room. Pervert." she mumbled and went away,

He just let her say the word.

No one dares to talk to him like that. But she's right. What a maniac has he become right now? He wants to catch her and hold her body to remind her who the hell she is talking to. But he just let her go away with it. He knows that time will come; she will pay for taking him so the first time, a girl is treating him like they have the same standing in life like she is just like him, she's not afraid of anyone and she's not holding her sharp tongue if anyone will try to step on her pride.

Krista turned away towards the other rooms. Levi just chuckled. Calming his self.

Meanwhile at the corridor

"If I only know you were here, then I should have taken the clothes with me," Krista mumbled while she walks to the corridor. Out of nowhere, she was embarrassed by herself. She indulged too much when they held hands and she just thought that they were getting into something...

What's happening to her?

Was the Captain disgusted by her looks that made him turn away? Was he not interested in her at all? Was he just teasing her or testing he-

Her thoughts were interrupted because suddenly someone bumped her in the hallway that sent her to the side of the hallway.

"Oh! Jeez! Careful!" A familiar voice spoke.

"Ymir?" Krista asked the figure that was in front of her. It's dark here, and she looked harder.

It was Ymir.

"Oh. Krista. What happened to the lamp? Why are you not bringing one?" Ymir asked

"It- it kind of slipped down from my hands so now. . Its. ." Krista didn't finish her words because Ymir spoke again.

"The hell is that, Why are you just wearing a towel?" Ymir exclaimed and placed her hand on her waist.

"Y-yes. I just finished taking a bath," she said.

"But your room is there? Come on." Ymir immediately grabbed her by arm and pulled her to the room where she came from. "I heard you need someone to accompany you. Get ready to wear your clothes. It's not like we're not both females, you're lucky I got here on time. . Just promise me you'll marry me when everything is clear. Hahaha," Krista suddenly alarmed. She was resisting Ymirs grasp.

"Nahh, Ymir. I want to use another room anyway."

No! She can't let Ymir see the Captain!

But it was too late.

When they got to the open door. . Ymir froze as she looked inside of the room.

"Ymir. . . " Krista rebelled under her grasps.

"Hey, there's a guy in your bed Krista." Ymir pointed to the person who is now half-naked.

Captain Levi was lying down, shirtless.

"Now Krista, why are you taking so long-. . ." Captain Levi got up and turned to sit position on the bed and looked at them.

" Levi?!" Ymirs voice is surprise

"Who the crap are you." Levi just simply said in a calm but dominating tone.

"Y-you were lying in there while Krista is. . . Uhm. .wearing a towel. And she came from this way?" Ymir's voice was suspecting and sounds like she's tensed

"Hey Ymir, it's not like what you thought!" Krista spout

"Crap. Now where will I sleep?" Captain Levi

"Why is it that you were together in a dark headquarters! And just wearing !" Ymir turned to her with an angry look.

"No, we didn't do anything. It's just a coincidence." Krista said.

Krista knew Ymir so well when in times like this. She gets so furious when a guy tries to talk to Krista or sometimes she overreacts. And right now, Ymir's reaction was the same.

She's overreacting in front of the Captain.

"Tch, ok. I'll leave. I didn't expect that there will be people in the headquarters, that's why I went here and found her just wearing a towel. I didn't know you were planning to see each other here in the middle of the night." he is talking while taking his clothes on. And the worst part was when the Captain reached for his zipper on his pants and

Slid it upwards and closed its button.

Krista's eyes widened, her vision was now spinning around and her mouth fell open. She turned to Ymir and just like her; she was also stunned by his gesture.

What was he trying to do?

Krista didn't know how to react to this, she's nervous and all she wants to do right now was to run away from this room. But good thing that Ymir was just standing beside her, she can see how her eyes sharpen at the sight of the man in front of them. The Captain walked towards the door, Ymir and Krista stood beside him as he walks out the door.

"What the hell is happening here?" Ymir asked in a low cold tone.

Krista immediately grabbed Ymir's arm because it's already a sign for her.

This is a warning.

"Ymir, stop it!" Krista said.

"Are you disappointed because you thought she's alone?" he said.

Oh crap. Can he just go away already?

"So what?, We all do our scouts here," Ymir said crossing her arm.

"Just say it; you were scared we are going to do something tonight?" Levi spoke.

Oh, how she wishes that he would just walk away and leave Ymir alone.

"We don't intend to Captain. I am assigned here alone to scout for the rest of the night. I didn't expect both of you to come. Ehehehe" Krista said.

"Then don't go around wearing just a towel. . . You could have bumped into a guy who wanted to do some dirty thing with you." Ymir said and glanced to Captain Levi. Krista just thought about the little tag of hand war along ago.

The dirty thing with her huh?

"Watch it." The Captain dryly commented as he walked another step away from them.

Krista imagines Captain Levi, a person who wants to do something with her. ..

"Ymir! The Captain didn't know I am here," she said

"Krista, clean the lamp glass fragments, I don't want some of it left there in the morning," he said with a pissed tone of voice. He just looked at them even it's still dark, Krista can see the stern and serious face he had. He walked away until he gets to the stairs. He went down. After the Captain disappeared into the corridor Ymir turned to her with a cold voice.

"What happened to the lamp?" she asked

Krista jumped on the tone. It was so cold that she can feel its spiny thorns.

She's angry.

"I dropped it here when I saw somebody's lying down on my bed," she said nervously.

Ymir had kick, several guys lately who tried to sneak on her in the toilet.

"Now, dress up. You know guys long to see you under skin you fool. I'll get some candles" she said to Krista and turned away

"He's not that kind of person," Krista murmured.

"What? What did you say?" Ymir turned to her and her face was so pissed?

"No. Uhm nothing." Krista

"Now I'm having doubts here. The Captain is here, lying in your bed, and at the same time, you were naked walking around. Don't tell me you're not seeing each other in a one-house using the same bed?!" Ymirs overdramatic now.

"Hey, Ymir, stop that nonsense! I didn't know he's lying there already. That's why I broke the glass." Krista said.

"So, you mean, the Captain layed there knowing your clean clothes were waiting for you in the top of the bed?" she said

"No. I. . . I don't know," she said

"Now you have to understand that guys are not to be trusted when you're at your naked times. Always bring your clean clothes with you when you take a bath alone in the house. Get it?" Ymir said

"Ok," she said.

"Fine, you stay inside the headquarters, I stay outside guarding so the males won't come lying in your bed. I could have killed a Captain this night if it wasn't for you. . Let me clean this mess. Tssk" Ymir said.

Krista just laughed nervously.

Kill a Captain. Can she really do that?

Krista went inside the room and dress up. Ymir came and cleaned the shards on the floor. She went outside the house. Now she's lying in the bed. How could she let the lamp slip off her hands when she saw Captain Levi in her room? She can't believe how peculiar it is to see the Captain sticking an eye to her. His stony and bored expression of the face was just steady at her.

Right now, alone in this bed where Captain Levi lay with his pants open. Krista doesn't know if she wants to feel disgusted or not. If anything is bound to happen between her and the Captain, it should not have deeper consequences between them. She's closing her eyes now, she drowns her face to the sheets of her bed and she smelled the scent of the previous person who lay there. It's Captain Levi's smell. She remembered their encounters, how both of them lose in a sense of thinking when they look at each other, the urge to touch each skin, to not look away when they are together. She imagined that he's here with her.

The sight of Captain Levi's eight packs. The feeling when he is licking her neck, pressing his body to hers.

Is he out of his fucking mind?

"Crap. What am I thinking," she said.

And then she can't think straight. His scent was still here.

She imagined if only she came back without Ymir. What would happen? Would she allow it? Would she be one of the subordinates who sneak at the men's quarters to have sex with them? Is this how it works with sex when you are in the military?

But she owed him.

Now it's clear that Captain Levi wants her in bed. What a straightforward person. Not all guys she met confess to her. She can only hear them saying they fantasize about her but no one ever dared to treat her like this.

Captain Levi was expressing his self to her unconsciously.

She chuckled but felt happy about the thought. He likes her and she might like him back because somehow. . He's a good man.

It's already morning.

Levi was walking to the headquarters where Krista slept last night. he slept only for four hours because he is deciding whether to return to the headquarters last night or not.

Last night, His body always moves to the other side of the bed. He closed his eyes and sees Krista in her towels. Now, he pays for the price of fantasizing about a woman the whole night.

He was wishing that Lenz won't show up today.

Then out of the fucking blue, he saw Ymir walking towards him. He knew that she's mad today because seeing her precious Krista alone with a Captain in a headquarters was sure was a nightmare. And Levi was sure about that, her jealousy is written all over her face. Although she's a girl, her features were just like a guy and he can notice that she's in love with Krista.

"Captain Levi." Ymir simply said when he passed her but he didn't budge. He kept on walking.

"Did you plan that last night?" she stopped walking and asked.

Levi was planning on leaving her there but when she talked about Krista, he stopped.

"Is that your only concern?"

"Of course yes. I've been with Krista ever since we entered the corps. A lot of guys wishes to have her, but I kept them away for a while." Ymir

"That's good," he said and tries to walk but she spoke again.

"I know I'll leave her one day. And I think you're more capable of protecting her." Ymir said, Levi suddenly jolts with the word. He just stopped and listens to her without looking at her.

Krista? That tiny blonde girl, with big round blue eyes. He always imagines how great pleasure it is to be with her all the time. Especially when he saw her last night, just wearing a towel to cover her body. He used all his strength to keep himself under control because Jerk Levi is taking over his body. He tried to be cautious with all his might.

"Why would I have to protect her? She's a strong soldier. She's one of the top 10" Levi said

Ymir smirked.

"Even your discreet admiration for her even makes you more compatible with her." Ymir said

Compatible? Does a person like him will ever be compatible with anyone?

"Don't waste my time. Who do you think she is, to need my protection?" he snarled to her.

"No one. I think I am bound to be at her side always. I don't know if its love but all I know is that I always wanted the best for her." Ymir said, even with her fierce-looking face, he can still see the concern in her eyes.

And he hates that.

"You're just emotionally attached to her. Tsskk. Filthy bitch." he said

"Captain, I am not against if you wanted to make a relationship with her. Don't deny it; I've been like this to other guys. I know that they like her. And so as you" Ymir said

"How dare you talk down on me, kid, just who do you think you are right now?" Levi said in warning.

"I am not talking down on you. But I'm going to say this once," she said.

Levi stayed and waited for what she is going to say.

"If you touch her, it means, you're bound to protect her for all your life," she said in a low sad voice.

Now, this isn't funny. Levi doesn't want others to talk so informally to him. This is something very personal and Levi's not that open person. She's talking about what he feels like as a man. It's so damn insulting.

"Idiot. Don't mistake me for a low flithy comrade. How dare you talk like that to your commanding officer." he said in a simple but firm tone.

"I'm only ensuring her life in case I'll be gone. Among all the people here, you're the only capable person who laid eyes on her. You can protect her, and I am sure of that. I will not stop you from pursuing her. You can kill me if I get in your way but just promise me that you'll protect her and if you hurt her by any means. I'd be happy to rise in my grave just to kill you." she said

Wow, how deep is that grave? Levi wants to smirk. Why would she think that she will be gone in the future?

"I'm not interested in your proposal, so stop wasting my time." He doesn't want this conversation. He started walking when Ymir talked again.

"This is not a proposal. This will be the future consequence if you continue with that payback," she said

Now, how did she know about it?

He didn't say anything anymore, and then he left her standing in the way.

Levi went to the headquarters, where everyone is now eating their breakfast in the front yard. The cadets were there, Eren and her friends, Sasha and Reiner, and Bertolt. Hange and Erwin and the others were also talking and of course. . .

The kid is there. Krista

Her beautiful smile and her slim body, holding a pitcher and a tea, he just ignored everyone and went straight inside the house. He lied to Ymir. She's right about what Krista means to him. He likes Krista a lot. He doesn't know when it all began. But now, he has to work.

The mess when Krista broke the lamp last night. He is sure that there will be shards of it. It's one of the things he hates. He went to the room where Krista broke the lamp. He gets inside the room and looked at the floor. He's checking if there are still glass fragments left. He gets some white cloth from his pocket and rubbed the floor where the glass fell. After rubbing it to the floor, he checked it and it still has the tiniest fragment of glass.

Levi's hands feel numb and a chill was all over his body.

"Fuck, it's still not enough." his face turned steady and pissed, he heads down the house and searched for Krista. The subordinates that were there when he came down just shook a look of fear.

"Krista Lens!" he opened the front window and called her.

"Huh? Hey Levi! Eat your breakfast, then come with me, we will talk to Sawney and Beane later!" Hange waved her hand to him. Her squad and Levi's squad were at one table.

"Captain! You need to eat your breakfast." Petra calls out to him.

"I'm not hungry. Tell the others to prepare." Levi ordered to them.

"Levi, did you sleep? You don't look great today?" Hange suddenly asked him.

"Fuck it Four-eyes. Where's Krista Lenz?!" he said to everyone.

"Yes, Captain?!" Krista was standing beside the window. He flinched.

Why is this brat suddenly showing its beautiful self out of nowhere?

"You brat, there's still a glass fragment left in the floor," Levi said

"What? But Ymir cleaned it perfectly!" Krista reasoned out

"Really? Then come here and check it yourself." Levi turns away from the window and Krista entered the house. They both went to the room. When they got there, Krista went down the floor and checked. At that time, Levi was facing the backside of her, when she heard down her body.

Levi turned away. She even has that perfect ass.

"Captain, there's nothing left there. Didn't you see?" Krista got up frowning and put her arms beside her waist. Her face was almost covered by her hair. Levi wants to reach out for her head and wipe her hair away from that beautiful face. She'll look beautiful if she ties her hair.

Levi was looking at her from the door. "Hey. . ." he said to her.

Krista looked at him. Her lips were in the shape of "O" at that time. He can't deny how cute she looks this time. With the sunshine light that came from the window behind her. She looks stunning.

"You let Ymir clean your mess?" he said. With a guilty face, she frowned.

"She insisted to do it. I hope you will not give her any trouble about it." Krista

"I want to ask you. Do you have a thing with her?" he said

Krista looked shocked.

"No we're not." she just said.

"Don't make me look stupid," he said

"I said no. She's a special friend if you insist to ask," she said

Levi stared at her. He will know if she is lying or not. But fuck says it all. She was not lying.

"Did she talked to you?" she asked placing her left hand on her chest.

She knew that Ymir is overprotected to her; maybe she confronted the Captain about it last night.

"No," the Captain replied leaning by the door.

She's relieved. She knew how furious Ymir was last night. But she was acting strange. She's not angry in a way that she wants to punch someone. She's strangely calm.

"Ok. I'll clean this place, Captain. Did you eat your breakfast?" she asked and started to reach for the broom at the side of the room.

But the Captain stepped inside of the room and closed the door. Krista froze and just when she tried to look at him, he already grabbed her by the hand and pinned her on the other side of the wall. Their face met and suddenly Captain Levi's gaze was burning her, she thought that he's about to kiss her but she noticed that he's hesitating.

Krista's heart pounded as she can finally see at his face in broad daylight. And he is. . .

A good-looking man by any means.

If you touch her, you are bound to protect her all your life. If you hurt her,

I'll kill you

Ymir's voice was ringing in his ear while he's staring at Krista's face. Their mouth was so close. The familiar heat in their skin was now burning as one. Their heart is pounding together. Levi set her one strand of hair aside and touched her cheeks. He pressed his body to hers, and he can feel how she welcomed his presence. She breathed intensely and it made him more excited and curious.

This is so satisfying.

"C-Captain, wait, what are you doing?" she whispered with that puzzled look.

Levi breathed. The urge that was pushing him to his limits has now taken control of his mind.

By any chance, he was hoping that Ymir was right. That there is a person that can prove to him that he was compatible for someone. .

He seek for an answer . . . if it was true, that he was compatible for her.

"Tell me Krista. . . what makes you so special?" he asked Krista Lenz.