"Frankly Ao, I'm your SISTER! Save your perverted tricks for the girls at your school!"
"But sis, it was an accident!"
"You blasted my undershorts without damaging my skirt as an ACCIDENT? If you insist on lying do it right at least!"
"Is going commando soo bad sis? Fuuko-nee does it all the time-"
"Dojo, now!"
"Keiko-chan, I don't want to hurt you..."
"But I want to hurt you."
...
The walk home was uneventful, and I walked slowly hoping to give sis some cooldown time.
I go directly to the dojo, lest she go angry at me again, ans find her standing in the middle of the training area no guns in hand, but a chesire grin that made my blood run cold.
"Sis if you kill-"
"Death is too good for you. You're going to suffer, and I know exactlyhow. Now, en garde!"
She steps forward, but stops "Da~amn I forgot my panties!" She blushes with a slightly angry expression. Combined with her tsundere-like hairstyle, S-grade zettai ryouiki and expression she makes me highly flustered.
I put myself in position. She reach in her cleavage, 'no, not the zeliska…' and pulls her shotgun grip.
"Ah! Its co~old," her breast jiggle at the motion, "Why did I choose one so long." the iron barrel rubbing her skin makes her moan a bit, and her face fluster cutely.
"I imagine it within me, the c*ck ready and waiting. Pull the it back, trigger it and let it release deep inside, flooding myself..." I stop dead. Its common knowledge that she got angry when she finally found her visualization, for it was something embarrassing, but that... that sounded like something from Karin's... And she said it out loud too! I found myself getting aroused, and at my sister! Am I that perverted? "Action open. Charge. Load and fire!"
Damn, I lowered my guard. And got hit. And blacked out.
...
I wake up in the infirmary, a pack of ice in my balls, and Chiho-kaa scolding Keiko...
"...He could have been permanently injured-"
"Which would be a service for girls around the world, besides I used a bean-bag shell at 7 meters when he was wearing the protective suit."
"Even so-"
"And he embarrass me publically, And I won't accept that. Case closed." And she walked away.
"How bad is it Kaa-san?"
"You will be unable to walk for a week, but no permanent injuries. I hope you learned your lesson."