Spawned from the prompt "Mako being awkward around Korra" over on Tumblr, and then I just had fun.
The lovely Tumblr user minuiko drew fanart for it, which can be found here!
"Your stance is off." It's the only thing she says as she enters the training room, where Mako has been practicing for the past half hour.
Mako rolls his eyes. "And you're late. Can we move on from the criticism and start practicing?"
"You really want to fight me with that form?" Korra asks, raising an eyebrow.
"Korra, this is the stance I always fight in. It hasn't failed me yet."
She scoffs. "Yeah, but it's wrong. My Firebending sifu would have you flat on your back in two seconds with it." She walks behind behind Mako. "Here."
Before Mako is even aware of what is happening, her chest is pressed against his back, her hands grasping his arms. He prays that she can't feel his heartbeat quicken, that his head won't turn in the wrong direction to reveal to her how red his face is becoming, that he won't trip and fall and make an ass out of himself in front of her yet again, and he feels her moving his arms into a position that's foreign to him as his mind works. She kicks at his feet to widen his stance. She moves his right leg back and brings his left to the front.
And then she puts her head in the crook of his neck to check her work and adjust his forearms and hands, and as Korra's hands make contact with his wrists, Mako doesn't think he can handle this anymore. He feels flustered and bothered and his tongue turns to dry clay in his mouth.
Korra smirks. "And that's how a Firebender should stand." Her head is still in the crook of his neck as she brings her hands to his shoulders. "Got it?"
Oh, she's doing it onpurpose!
Mako tries to form words, but they die in his throat. "Uh…I…ah. Y-yeah."