"Jump! Jump! Attack!" your little sister directs and you press the appropriate button. Her fluffy blonde ponytails sway in front of your face as she plays the game. When the level finishes she leans backward, resting against your chest.
"Whew, that one was tough."
"They all are much harder when you do it with two people on one controller." you answer and grab a chip from the packet with your left hand, then chomp it down.
Your sister tries to get one as well, but the bag folds inward and she just pushes it away.
"Don't eat chips while playing, you'll get controller all greasy and gross." you teasingly chastise her.
"Shut up! You just ate one a second ago!" she says, annoyed.
"I play with the other hand, lol." you mock her.
"Well, I can't do that!" she gets angry and looks at the cast on her right arm.
Your dumb little sister managed to break her arm while rollerblading, and now you have to babysit her. But at least playing games takes her mind off it, and she stops whining.
So you two play together with one controller, sitting in tandem on the sofa.
"Okay, then I'll feed you. Aaaaaah." you deftly pull out a chip and dangle it in front of her face.
"Don't treat me like a child! I'm already an adult." she gets pissy again.
"Sure, you are very grown-up. Here comes the plane, vroooooo... Ugh!" you keep fooling around but your sister jabs you in the ribs with her elbow, then snatches the chip.
"Idiot." she pouts "When will I be able to take this thing off, it is so itchy." she tries to scratch under the cast.
"That's good, that means it's healing."
"Then it should go and heal already. And it's so hot today too! I'm gonna take a shower." she stands up and walks to the bathroom "Don't play without me, okay?"
"Sure, whatever, I will watch some videos." you lean back on the sofa and browse for some lets plays.
After a minute you hear the sound of some plastic bottles falling.
"Big bro!" your little sister calls from the bathroom.
"What?"
"Can you help me?"
You walk into the bathroom and see your sister with her tank top half-pulled up her torso, struggling to pull it over her head.
"Help me take it off." she pleads.
You grab the tank top and pull it upward, leaving her standing there topless, and then realize.
She does not wear a bra. She does not need to.
Your eyes get glued to her small perky breasts that stick just a little bit proud of her lithe body.
"Thanks, brother!" her voice rings and snaps you back to reality.
"Yes... no problem, you can take off the rest by yourself." you say with your face red and hot as you escape the bathroom.
'That was not good. She is my sister.' you think, sitting on the sofa. You try to watch some videos but can not take the visage of her beautiful body out of your mind. 'Crap. Guess I'll just go to my room and jerk off.' you ponder when you hear your sister calling again.
"Big bro!"
"W-what now?"
"Can you help me again?"
You stand up and head to the bathroom again. As you open the door you see your little sister sitting in the bathtub with her back toward you.
"Can you please help me wash my back?" she asks.
What is this? Some kind of trick? Is she trying to get back at you for teasing her?
"C-can't you do it yourself?" you ask.
"Not with this." she shows the cast on her arm, now wrapped in cling film to not get wet.
"Fine." you take the sponge from her hand and soap it up.
Her petite back looks so delicate that you are a bit apprehensive to apply any force, so you gently rub the sponge along her skin.
As you do so, your sister starts to make strange noises and her breathing get's faster.
"What's wrong? Stop making those sounds." you say, trying to suppress any lewd thoughts.
"B-but it tickles." your sister answers, looking down.
"Okay, that should do it." you take the shower and wash off the soap.
"The hand too..." she says, lifting her left arm.
Well, with her right one in the cast, she has no way to wash the left one indeed.
"Lol, you are so helpless." you say to her and start to wash her hand.
"Hya-ha-ha!" as you reach her armpit, your sister bursts into laughter and twists her body, making your hand slip and brush across her petite breasts.
"S-sorry. I didn't..." you mumble, trying to pull your hand off, but the way she instinctively lowered her arm to escape from the tickling sensation trapped your hand between it and her body.
"You... can wash here too." she says while looking away, you can see her ears are getting vividly red.
She says "can" but it sounded like she wants you to. With a soapy hand, you gently squeeze her small delicate breast and she lets out a cute little moan of pleasure.