Blue Exorcist Oneshots

Anoyance is in a Brother's Job Description

When they went to the Okumoras' dorm for a visit during break, A tickle fight was the last thing to be expected between the twin sons of Satan.
Really, it was Sheimi's idea to come over and play a game and Shima backed her up and brought the game. Rin met them at the door, Yukio muttering under his breath and going back to their room.
After they finished a game of Monopoly just under 2 hours later, Yukio came back to observe as they took out a deck of Uno cards.
"Hey, Teach!" Shima said. Bon held up a hand in greeting and went back to shuffling. Izumo only looked up, but Konekomaru waved and Rin grinned at him.
"Yuki! Join us!" Sheimi said.
"Yeah, we're just starting." Said Rin.
He came around to the chair next to his brother. "Uno? Ah, fine."
As they played, Yukio reversed on Rin and then started making him draw cards or skipping him. The others helped by keeping it reversed so Yukio played before Rin. After Rin reversed again and Yukio parried with yet another reverse, Rin lost it.
"Gah! Damn it, Yukio!"
Yukio chuckled. Rin lunged toward him so suddenly, Yukio almost fell backwards on his chair to avoid him. He ducked behind his brother and rushed to put the table between them as Rin picked himself up and tried to dart one way, but Yukio darted around the table in the opposite direction to keep it between them. They ended up playing a mad game of tag as the rest of the group looked on with confusion and amusement.
"Get back here!" Rin yelled, chasing Yukio around the table.
"Make me!" Yukio grinned.
"Ohoh your gonna pay."
"Oh, yeah? We'll see."
Finally, Rin managed to catch up to him and grab the collar of his shirt, sending them both crashing to the floor where they wrestled with each other. Rin suddenly screamed and broke away from Yukio, glaring, but Yukio wasn't done. He lunged forward and turned him to wrap his arms around him from behind, worming his fingers under his brother's arms.
Rin screeched and squirmed, trying to loosen Yukio's hold, before breaking into hysterical laughter.
"Thought you were gonna make me pay."
"Yohohou will! Gahahah! Yukiohohoho!"
Yukio got 2 precious minutes before Rin turned the tables, sweeping his tail up Yukio's side, making him tense and shiver until he finally turned his head and eased ever so slightly on his assault. But it was enough. Rin sat up and squeezed Yukio's sides, just under his bottom ribs, his easiest sweet spot. Yukio yelped in surprise, squirming and trying to back up to get away, but Rin grabbed his wrists and knocked him over, transferring them both to one hand to tickle the hell out of his brother.
"RIIHIHIN!!!" Yukio protested when Rin scribbled his fingers over his stomach. Rin laughed and let go of his wrists, giving him a second of hope to escape until Rin started to pinch at that spot under his ribs, earning a squeak that sent his laughter into a higher pitch and making him wrap his arms around himself in self defence. Rin knew exactly how to drive his brother to hysterics. He didn't tickle him too often, but he loved to hear him laugh when he needed it. Or deserved it. Sometimes Rin tickled Yukio when he needed to loosen up or needed a reminder that he was still Rin's little brother.
Yukio squirmed and desperately kicked, laughing his head off, very unsuccessfully trying to get free. Rin used his strength to pin his arms above his head again so he had full access to his ribs. "GAH! Naho! Rihihin, not fAIHAHAIR!" Yukio threw back his head and laughed as Rin scratched at one side of his rib cage and alternated from poking and prodding to scratching at the other side.
Rin giggled, delighted to see Yukio full out laughing for the first time in a while. Finally, he let go of his wrists and Yukio curled up on his side, still laughing hysterically. Rin poked his exposed side, teasingly. He couldn't help it. Yukio flinched and his giggling increased again.
Rin laughed. "C'mon, foureyes, you know better. I always win tickle fights!"
"Yohou're.. an ass.."
"Oh, yeah? You started it!"
"Did not."
"Did too."
"You lunged at me."
"You kept being annoying and cheating at Uno."
"Little brothers are supposed to be annoying, aren't they? And I did not cheat."
"Yeah, sure. Whatever."