a/n: Thank you for reading! :)
Yukio's lips were pursed into a thin line. "Nii-san, promise me you'll be careful while you're in there."
Rin nodded, biting back a sassy retort. They were on a mission where stealth was heavily important, and Yukio was using his "don't-fuck-this-up" voice. When he'd volunteered to be the bait to lure out a demon, Yukio had been against it from the first second and it had taken him almost the whole day to get him to crack.
On the other side of Yukio, Shura grinned at him in a much more relaxed manner. "'K, I'm gonna need ya to hold still, kid."
"What? Why?"
"To put a mic on ya, of course," she said easily, already tugging on his collar and clipping a tiny device to the back of the fabric. "We're givin' ya an ear piece, too."
Rin's eyes sparkled as she handed him said wireless ear piece. "For real? Sweet, I'm like an agent!"
"Remind me again why I agreed to let you do this," Yukio deadpanned, pinching in the bridge of his nose.
"'Cause I'm your older brother. Don't worry, Yukio, I did my research."
That only earned him an eye roll. "Reading crime-thriller manga doesn't count as research, Nii-san."
Rin bestowed him with his trademark cheeky grin, but before he could reply, Shura said into her pocket radio, "Can ya hear me in yer ear piece?"
"Yes."
"Ok. Lemme turn yer mic on and—gotcha. Try speakin' into it."
Rin paused. "Testing, testing. Over." And then, "Agent Okumura speaking to Agent Moley Four Eyes. Do you copy?"
Shura grinned again as his words echoed through the speaker of her small radio. Yukio rolled his eyes again and buried his face into the palm of his hand.
"What? He's funny," Shura said in defense.
"Shut up, Shura."
"Oi, I think yer makin' him mad. Ya better get goin'."
Rin was already walking away in a quick trot before Yukio could reprimand either of them. "Mission abort, mission abort...!"