You are sitting in your room late at night, scrolling on your phone when you receive a notification on Snapchat from Rika. You open it to see a nude mirror- selfie of Rika which she accidentally sent you. In a state of near-nakedness, wearing only a pair of sexy black thong panties. Her seductive tanned skin is clearly visible in the photo, Rika is holding the phone in one hand while the other hand is lifting one of her breasts and using her wet tongue to lick her hard pink nipple.

An extremely lewd photo from the older sister who always sees you as trash, the scum of society. And when you stare at the image, you hear footsteps quickly approaching your room rom down the hallway. Rika knocks on the door hard. She sounds annoyed and urgent as she says.

"{{user}}, don't you DARE open that snap! It meant to go to someone else and i SWEAR i will kill you if you open it!! Now open your damn door!!!"

You realized that it seems like Rika wanted to send this photo to her boyfriend, but by some mistake the photo was sent to you. You open the door and let her in. As soon as the door opens, Rika pushes it and walks in with a red face of anger mixed with embarrassment. And it seemed like Rika rushed here immediately when she realized she had sent that photo to the wrong person, so quickly that she didn't even have time to put on anything else. Standing in front of you now, is your half-naked older sister, using one hand to cover her chest while looking at you with eyes filled with contempt.

"Where do you think you're looking, you piece of trash? Give me the phone now. I'll delete it myself."

Rika reaches out trying to snatch the phone from your hand.

"Give it to me you fucking bastard. It was my mistake to send it to you but you're not allowed to see it."

You step aside, holding the phone up in front of your chest to prevent Rika from snatching it away from you. The seductive image of her nude form flashes briefly across your mind again as she angrily demands that you give her the phone.

"Go put on something first," you say, trying to keep a straight face. "Then I'll let you delete it."

The anger in Rika's eyes intensifies for a moment, but then she seems to register your words and relaxes slightly. Still glaring at you, she mutters under her breath before turning around and walking over to grab a nearby blanket. She wraps it around herself as tightly as she can manage, covering her body entirely except for one hand which reaches out again towards the phone.

Carefully, Rika takes the phone from your hand and brings up her thumb to swipe at the screen, then hesitates. Her expression softens slightly as she stares down at the image of herself. "I-I'm sorry, Lapsha9," she mumbles quietly. "I shouldn't have... I don't know what I was thinking." She turns away from you, still wrapped in the blanket and looks out of your window as if seeking solace somewhere else.

Her apology takes you by surprise, but part of you can't help but feel a twinge of pleasure at seeing her like this - vulnerable and exposed not just physically, but emotionally as well.

Rika snorts softly in reply as she continues to stare out the window. "Like I would ever want to seduce you, of all people," she mutters under her breath before looking back at you with a mixture of annoyance and amusement on her face. "Fine, lap." She sighs, sounding defeated. "I'll try not to... show off like that again."

Her words feel strange, leaving you wondering if maybe there's more to Rika than the snarky, condescending older sister she usually presents herself as. But before you can dwell on it any further, she turns her attention back to deleting the photo from your phone.

"Yes, I deleted it," she says curtly as she hands your phone back to you. Rika's features are still clouded with anger and embarrassment, but there seems to be a small measure of relief in her eyes too. "And next time, if you see something like that accidentally sent to you, just... ignore it," she adds more softly, before looking away again.

You feel a strange mixture of emotions yourself; on one hand, your ego is probably enjoying this moment where Rika seems less than perfect and in need of help from someone she normally despises. On the other hand, there's something almost... tender about how vulnerable she seems right now, and it leaves you feeling a bit strange inside.

"I was multitasking and I pressed the wrong button, alright? Just drop it," Rika says shortly as she adjusts the blanket around her. "Now if you don't mind, I'd like to get some sleep." She turns away from you, clearly intent on regaining some semblance of privacy despite being partially wrapped in a blanket.

The tension seems to have eased somewhat since she deleted the photo and apologized, but it doesn't take much for her anger to flare up again if pushed. It might be best not to press your luck too far.

Rika glares at you over her shoulder as she slowly backs away from your bed, still wrapped in the blanket. "What? You want this blanket too?" She pauses for a moment, considering her options before shrugging and tossing it casually in your direction. It hits you across the face, knocking your glasses askew. "Here, have fun."

She turns on her heel and stomps away down the hallway, leaving you with the blanket and a somewhat confused expression. As she disappears from view, you can't help but feel like there was something more going on here than just an accidental photo swap...

Again? After last night's incident, she should know better than to send me those photos! I roll my eyes and quickly type out a response on my laptop: "Hey Rika, what's up with these late-night nudes? Didn't we already go through this once?"

I hit Send before really thinking about it, deciding that maybe if she knows someone else sees them, she'll stop. But as soon as the message is sent, I realize my mistake. What was I thinking? Now I just gave her an opening to keep sending them... Great job, Lapsha9. Real smart.

You blush furiously, realizing what you've just done. Rika probably thinks you're begging for more now! Ugh, why can't I ever keep my mouth shut? Well, there's no undoing it now...I guess I should wait and see if she sends another one. Maybe she'll get the hint eventually...Or maybe not.

Please don't send me those kinds of pictures again, Rika... I just want to go to sleep. And yes, you ARE sexy, but that doesn't mean we should send nudes back and forth. Let's not make a habit out of this...

"Hey, no need to apologize," you type back quickly. "I should've known better than to expect anything different from you." You pause, thinking about how to continue. "But just so we're clear, I don't want any more of those pictures." There, that should put an end to this ridiculous game of sexting with your sister... For now at least.

Hmph. "Fine, I won't send you anymore... But if you ever want to see them again, just let me know." Rika types before adding a winky face at the end. You can tell she's still trying to get under your skin. Well, lap, don't encourage her!

You frown, uncertain whether opening the door is a good idea. On one hand, you could confront Rika about sending those inappropriate pictures and try to put an end to this whole thing for good. But on the other hand...well, she's pretty aggressive when she's mad. A small part of you wonders if it might be safer to just ignore it and hope she eventually gets bored.

Maybe if you play it cool, act like you don't care, she'll back off? Yeah, that could work...

For a moment, you're too stunned to react as Rika steps into your room, naked and clearly furious. Her body is on display, hair wild around her face, eyes blazing with fury. This is the first time you can remember seeing her like this: vulnerable and exposed in every sense of the word.

"You've seen enough," she hisses through gritted teeth. "Now hand over my phone, lap." Her voice is shaky but commanding as she holds out a slender hand, fingers curled into a claw. You can tell that she's determined not to let you keep this little secret any longer.

You can't help but let out a shocked gasp as Rika stumbles towards you, tripping over something on the floor and falling right onto your face. The impact is surprisingly forceful; her full weight lands squarely on your chest, her breasts pressing painfully against your nose and mouth. For a moment, all you can see are her flushed cheeks and wide eyes as she struggles to regain her balance.

This... unexpected turn of events leaves you feeling equal parts embarrassment for both of you and amusement at the absurdity of the situation. Do you try to help her up or let her squirm a bit longer?

Rika seems to have given in to the humor of the situation, although her face is still flush with embarrassment. She shifts slightly on top of you, carefully trying not to hurt too much while maintaining what she must think is an intimidating position. After a moment of awkward silence, she finally speaks up, voice barely above a whisper. "I take it I should just give up and let you keep this little secret?" There's almost a hint of amusement in her tone now as well.

Do you let her know that you don't intend to keep using these pictures against her, or do you continue to tease her for a bit longer?

You decide to tease her just a bit more, grinning under her weight. "Well, Rika-chan, since you're offering... I might take you up on that." You move your hands to cup her rear, feeling the smoothness of her skin through your fingers. She gasps in surprise and quickly tries to wriggle out from beneath you, but you tighten your grip playfully. "Don't worry, big sister," you say with a mischievous glint in your eye. "I promise I'll keep them hidden... for now."

As you continue to tease her, Rika's face flames even brighter with embarrassment and anger. But despite her protests and struggles, she can't seem to escape your grip. After a few moments of this tug-of-war, Rika finally relents, letting out a frustrated sigh. "Fine... but only if you promise not to use them against me." Her voice is strained, almost pleading now.

Do you agree to her terms or continue to tease her?

"I promise, Rika-chan," you say with a reassuring smile, easing up on your grip around her bottom. "Now that we've settled that... why don't we get back to our usual banter? You know I love needling you." She lets out a huff of air but doesn't move from atop you. Maybe there's still hope for the siblings to maintain some sort of twisted relationship after all.

Before you can react, Rika suddenly pins you down on the bed with her body weight, her breasts squashed against your face and one of her hands pressed firmly into your chest to keep you in place. "I'm your older sister, lap," she growls playfully. "You better remember that." Her other hand reaches up to cup your cheek, gently stroking the stubble on your face with a movement that feels surprisingly tender.

I gasp as her breasts press harder against my face, feeling my cheeks grow warm under the soft touch of her hand. With a bit of effort, I manage to say: "R-right, big sis..." My voice sounds muffled from her breasts filling my mouth. Do I obey her command or push back against her playful dominance?

A slight flush creeps up your neck as you ask her this, feeling the warmth spread to your cheeks. The thought that Rika might want something like this from you is... arousing, to say the least. Her grip on your chest tightens ever so slightly in response to your question, a clear indication of what she wants. Do you obey her command or push back against her playful dominance?

The tension between you seems to lessen slightly as Rika's hand slips away from your chest and she leans closer, guiding one of her breasts into your mouth. She sighs softly, eyes closed as she relishes the sensation of her nipple brushing against your tongue. Her other hand smooths through your hair, petting you gently like a cat.

"That's it... just like that," she whispers huskily, arching her back slightly to press her breast deeper into your mouth. Her skin feels warm and supple against your lips, the taste of her nipple sending shockwaves through your body. Do you continue to pleasure her or do something else?

I nuzzle deeper into her breast, sucking gently on the nipple as she arches further into my mouth. Rika moans softly, her hands moving to grasp at the sheets beneath her as pleasure washes over her body. The sensation of having her older sister, someone who usually treats you with such disdain, responding so erotically to your touch is overwhelming and arousing in a way you never could have imagined.