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(A/N at the bottom of this chapter)

Disclaimer: I don't own Ao no Exorcist

Rin Okumura, despite all Yukio efforts to prevent him from using that skill for unnecessary things he still manages to slip through. When Yukio ask him about it he keep saying that being in that form allow him to save his energy and it's easier to move anywhere. Or he will simply reply him with "Don't waste your ability, Yukio…"

But Rin really overdo it. Yukio got many report from the other cram school student that Rin skipped classes. They didn't know about the twins can transform to animal now so he sure Rin use that chances to walk around the academy in his cat from. No one will notice it.

Right now, he's standing on the side of his brother's bed. His nii-san has transform to a cat again and sleeping soundly on his pillow. "Nii-san, wake up!" Rin was still sleeping "Nii-san!" Yukio start to get impatient "Nii-san wake up, I have something to talk to you!" With that he quickly picks Rin up on his neck and tosses him back to the bed. Rin landed on his paw gently, now fully awake "What the hell Yukio?!" He hisses at the younger one.

"Nii-san, what did I told you about misusing that ability?" Yukio yell and send him a deadly glare.

"I heard you skipped class!…" Rin sweat drop.

Yukio sigh again "Nii-san, I love you and I don't want you to fail in your classes. You want to kick Satan ass right? You need to work harder nii-san…" Yukio softened his expression. Seeing this, Rin feel a pang of guilt. He has disappointed his little brother. Yukio sit on Rin's bed, still locking his gaze to Rin. "G-gomen ne Yukio…" Rin walk to his brother and jump to sit on his lap "I'm always a burden to you.." Yukio feel sorry for yelling to him earlier and proceed to stroke at Rin's soft fur "I'm sorry for yelling to you too"

Rin stay calm and feel Yukio's finger brushing against his coat. He likes Yukio's touch. It always manages to soothe his tense nerve. He let out a purr. Yukio smile upon hearing the sound "Make sure you didn't do it again nii-san, I'm worried at your safeties. In that form, what happen if you're attacked and couldn't transform back? You're far weaker than the enemy nii-san…" Rin leans further to Yukio's touch "But it's really fun to get out in this form…" Yukio laugh and he's sure that if not because Rin was a cat he must be pouting right now "Well then, how about we go out together sometimes. That way, I can take care of you and it's far safety" Rin brightens in happiness and let out a mew "How about this Saturday Yukio?" "Okay nii-san"

Yukio smirk when he thought about something "By the way nii-san, what you did before still need a punishment…" He strokes the bottom of Rin's tail slowly where he knows a cat would get aroused and it did! "Y-Yukio…s-stop…!" Ignoring Rin pleads he continue to give the pleasant torture to him. He only stop when he saw Rin was already a mess and he whisper softly in a teasing way "Turn back to human and we will continue this…"

A sudden flare of blue and Rin was back, splayed on the bed with a noticeable erection in his pants "H-hurry up Yukio!..." Slightly panting he pleads to the younger one again. Yukio start to kiss him affectionately and sneak his hand under Rin's shirt, playing with his nipples. Seriously, he loves to see Rin in this situation. His older brother has many sensitive spot and likes to succumb to pleasure. And Yukio will play with his weakness.

Yukio suck on a spot on Rin's neck, leaving a mark that will remain until tomorrow. Rin's was now overwhelming with pleasure. Eye's half-lidded and drool started to trail down to his chin. Yukio took in the delicious look his brother give to him and struggling to restrain himself from pounding into Rin raw "You want more? Beg me Rin…" He asks the poor half-demon while he hooks his finger to the waistband of Rin's pants. He always called his brother with his own name when they're in their intimate time. He prefers it that way because he enjoys it when Rin's face tinted with a faint blush upon hearing his name from his little brother.

"N-ngh…Y-Yuki…please?..."

Yukio pull down Rin's pants in one swift motion, revealing what has been hidden inside. Rin looks more tempting and sexy with his cock twitching and stood up proudly showing that he's already on his limit. Yukio smirk again. He trails his middle finger along the shaft, allowing the pre-cum to drip and coating it. He plan to use it to stretch Rin later, right now he's enjoying himself to tease his cute uke.

"Mew to me"

"W-what?...Yukiooo…please…I want you!"

"Do it or I won't give you anything!"

Rin hesitate for a moment before he thinks it's better to comply and follow what Yukio want him to do. And he will do it better. He curls his toes and clenches his fist. He looks at Yukio still with half-lidded eye and bends his wrist in a way like a cat that tries to paw at something. It's embarrassing but the reward he will get soon was a good one and Rin won't let the chances slip easily.

"N-nyaaa…" With a blush adorning his face he does it.

Yukio suddenly feel like he would burst from the cuteness in front of his eye. That's it! Rin want it and he wants it too, he won't wait anymore. Quickly, in swift motion he put his fingers into Rin tiny hole, squirming inside to let the boy adjust to the feel before adding another digit slowly. It was slightly hurt at first but as they have been doing this many time before, the hurt easily turn to pleasure moments later. Rin tense, he tries harder to contain himself from cumming.

"n-ngh…Yukioooo…" The older one pleads again.

Feeling that Rin has ready enough he pull his finger out and freeing himself from his pants "Be patient Rin, you'll get it" After aligning his own erection to Rin's he entered him slowly but stopped halfway inside.

Feeling the penetration was too shallow, Rin open his eyes and look at his little brother confusedly "N-nyaaa Yuki, w-why did you stop?..."

Yukio couldn't help it anymore. He stop to let Rin adjust and to make sure he didn't hurt him but the older one always find a way to snap him from his restrain. He ram inside and start to pound into Rin in a quick pace. Rin was in heaven as his prostate repeatedly hit by Yukio's cock and he spurted his cum. Yukio, feeling the wall around his penis tighten cum after that too.

Both boys pant heavily. Rin shirt was drenched with sweat while Yukio's has been thrown away across the room unconsciously when he pound into his brother. While trying hard to regain his breathing, Rin mumble "I love you..." Yukio smile and kissed Rin forehead "I love you too..."

When the after effect of their orgasm slowly fading. Rin open his eyes only to meet a hungry look on Yukio's face. Knowing what exactly both of them want, Rin put up a grin and ask "So…another round?..." "Sure, if you can handle it!"

Gomen…this chapter has nothing except sex…because of that I made it short. lol

Still really I need to put it. I was planning to end this in next few chapters so I will start with the actual plot and abandon any unnecessary things. I don't want to stop writing multi-chapter story again because the plot was too long and I get bored easily. I know this one was shorter compared to the first chapter but don't worry, the next chapter will be long enough to satisfy you.

And there will be mpreg, a weird and funny one (I think). Like I said before, this was an idea coming from my friend so she's the one suggesting it. I know some people don't like an mpreg story but hope you will stick with me and read the next chapter. Thank you for all of your support ^^

That really was a courage to me to write a new story xD

Ps: I'm sorry again but I might be updating late because I got my final exam tomorrow until next week… (gahhh! I should be studying right now!)

LOVE YOU ALL!

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