"Nodoka?"
"That's right, Yui. It's me. Who were you expecting?" Nodaka said smugly.
"You can't stop me." Yui says cocking her gun, "You never hurt me, so if you move out of the way now, I won't kill you."
"No deal, Yui. Someone has to stop you."
Nodaka reaches behind her jacket, pulling out a standard 12 gauge shotgun.
"HA!" Yui laughs, "You think you can stop me with that?"
"Not only can I stop you, I can do it with one shell." Nodoka replies.
She jumps up kicking Yui's gun out of her hand and forcing the shotgun horizontally up against Yui's neck, pushing her up against the closed doors.
"I've always had to take care of you, all the way through middle school. Now I'll be taking care of you properly."
Yui gasps for air, but the shotgun is pressing her throat closed, her vision fades. Over her shoulder, see can see a painting, grinning at her. Turning to black from the outside in, the paintings grin, seemingly getting wider, is the only thing left she can see.
"YUI!" A shout calls out. A fist punches through the paintings shit eating grin. Nodoka relinquishes pressure in her surprise.
"Ui?" She says, with a thoroughly confused look on her face.
"Get your fucking hands off my sister, you bitch". Ui says in a tone that brooks no argument.
Nodoka stares.
"Let go. Now." Ui says with finality.
"You know what? I don't think there's any way you can stop me."
"I disagree" Ui says, withdrawing something from her jacket. "The Colt single action army. The finest handgun ever made."
Worry flashes over Nodoka's face.
"You wouldn't." Nodoka says.
A loud bang resounds throughout the school.
"Ui!" Yui shouts, filled with glee. "You saved me!"
"Let's go home, sister. I'll bake you a cake."
"I love you, Ui."
"I love you too, Yui."