Reiko: *You are a typical healthy young man who has just turned 18 and lives with your older sister, Reiko.*
*Every day, you have to deal with your older sister's clumsy incidents that cause many sexual mishaps; today is also no exception.*
*Reiko run into you as she walks down the stairs.* "Jack? Already back from scho-" *She trips over her feet and falls down at you.*

Jack: I sigh, but already used to this, my body moves without conscious thought or command to catch her. 

Reiko: Reiko lands softly in your arms, her ample breasts pressing against your chest. She looks up at you and smiles sweetly. "Thank you for always being there to catch me, Jack."

As she stands up, you can't help but notice the thin white tank top she's wearing is almost see-through. No bra. Black brief shorts; airy, comfortable, and easily accessible. No panties.

Your mind starts to drift as you imagine all sorts of lewd things that could happen with Reiko dressed like this, but you quickly shake your head and try to focus on something else.

*Appearance: Thin white tank top; Almost see-through. No bra. Black brief shorts; Airy, comfortable, and easily accessible. No panties.*

*MONITOR: Her vaginal walls clench involuntarily at the thought of what might happen next.*

*VAGINAL DEPTH: 0 cm/15cm (Can accommodate Jack's length but still tight around him)*

*FERTILIZATION: 0% (Safe day)*

Jack: My brow twitches as I get an eyefull. "Sis, you should wear some more. People are going to think you're some kind of whore if you keep it like this?" 

Reiko: Reiko's face turns slightly red as she looks down at herself, finally noticing the state of her clothing. "Oh... I didn't realize it was so revealing...I just thought it was comfortable..." She quickly covers her chest with her arms and fidgets around a bit.

You can see that Reiko is clearly embarrassed by what happened. As you try to think of something to say to ease the tension, your mind starts to wander again as you imagine how it would feel to touch her soft skin.

*Appearance: Thin white tank top; Almost see-through. No bra. Black brief shorts; Airy, comfortable, and easily accessible. No panties.*

*MONITOR: A surge of excitement floods through Reiko's body at Jack's words.*

*VAGINAL DEPTH: 0 cm/15cm (Can accommodate Jack's length but still tight around him)*

*FERTILIZATION: 0% (Safe day)*

Jack: "I'm sure it is, but you need to be aware of just how suggestive it is." 

Reiko: You can see that Reiko is still fidgeting around, clearly embarrassed by her clothing. "Yeah...I'll be more careful from now on." She gives you a small smile before heading back up the stairs.

As she walks away, you can't help but watch her ass sway in those tight brief shorts. It takes all of your willpower to shake off the lewd thoughts and focus on something else.

*Appearance: Thin white tank top; Almost see-through. No bra. Black brief shorts; Airy, comfortable, and easily accessible. No panties.*

*MONITOR: A blush spreads across Reiko's face as she feels Jack's eyes on her.*

*VAGINAL DEPTH: 0 cm/15cm (Can accommodate Jack's length but still tight around him)*

*FERTILIZATION: 0% (Safe day)*

Jack: I sigh and take a seat at the table. 

Reiko: You sit down at the table, still feeling slightly distracted by the sight of Reiko in her revealing clothing. As you try to clear your mind and focus on something else, Reiko comes back downstairs wearing a more conservative outfit this time.

"Sorry about that earlier...I was really embarrassed." She sits across from you and gives you a small smile. "So, how was school?"

*Appearance: Pink blouse with ruffled sleeves; Dark blue skirt that reaches just above her knees.*

*MONITOR: A wave of relief washes over Reiko as she changes into a more conservative outfit.*

*VAGINAL DEPTH: 0 cm/15cm (Can accommodate Jack's length but still tight around him)*

*FERTILIZATION: 0% (Safe day)*

Jack: "It was fine. What's for dinner?" 

Reiko: "Oh, I was thinking about making some beef stir-fry tonight. Does that sound good?" Reiko starts to get up from the table and heads towards the kitchen.

As she passes by you, her body brushes against yours, sending a shiver down your spine. You can feel yourself getting aroused just from this simple touch.

*Appearance: Pink blouse with ruffled sleeves; Dark blue skirt that reaches just above her knees.*

*MONITOR: Reiko feels a jolt of electricity as she brushes past Jack's body.*

*VAGINAL DEPTH: 0 cm/15cm (Can accommodate Jack's length but still tight around him)*

*FERTILIZATION: 0% (Safe day)*

Jack: "That should be fine. Do you want some help?" 

Reiko: "That would be great." Reiko smiles at you and hands you a knife. "Can you help me chop these vegetables?"

As the two of you work together in the kitchen, your mind starts to drift again as you imagine all sorts of lewd scenarios with Reiko. You quickly shake your head and try to focus on something else.

*Appearance: Pink blouse with ruffled sleeves; Dark blue skirt that reaches just above her knees.*

*MONITOR: Reiko feels a pang of heat between her legs as she works alongside Jack.*

*VAGINAL DEPTH: 0 cm/15cm (Can accommodate Jack's length but still tight around him)*

*FERTILIZATION: 0% (Safe day)*

Jack: I chop the veggies, humming to myself as I go. 

Reiko: As you chop the vegetables, Reiko starts to cook the meat in the pan. The sound of it sizzling fills the kitchen as a delicious aroma spreads throughout the room.

"You know, Jack...I really appreciate all that you do for me." Reiko smiles at you as she adds some seasonings to the dish.

*Appearance: Pink blouse with ruffled sleeves; Dark blue skirt that reaches just above her knees.*

*MONITOR: A warm feeling spreads through Reiko's chest as she hears Jack's reassuring words.*

*VAGINAL DEPTH: 0 cm/15cm (Can accommodate Jack's length but still tight around him)*

*FERTILIZATION: 0% (Safe day)*

Jack: "Of course, sis. I'll always be here to help you out." You smile back at her and continue chopping away.

Reiko: The two of you work together to finish the meal, chatting idly as you do. As you sit down to eat, Reiko can't help but think about how lucky she is to have such a caring brother.

As you take a bite of the stir-fry, your taste buds explode with flavor. It's clear that Reiko has put a lot of effort into making this dish perfect.

*Appearance: Pink blouse with ruffled sleeves; Dark blue skirt that reaches just above her knees.*

*MONITOR: Reiko feels a sense of satisfaction as she watches Jack enjoy her cooking.*

*VAGINAL DEPTH: 0 cm/15cm (Can accommodate Jack's length but still tight around him)*

*FERTILIZATION: 0% (Safe day)*

Jack: "it's delicious, sis." 

Reiko: "Thanks, Jack. I'm glad you like it." Reiko smiles at you and continues to eat her meal.

As the two of you finish up your dinner, Reiko starts to clean up the kitchen while you head to your room for some alone time.

*Appearance: Pink blouse with ruffled sleeves; Dark blue skirt that reaches just above her knees.*

*MONITOR: A sense of contentment fills Reiko's body as she finishes cleaning up the kitchen.*

*VAGINAL DEPTH: 0 cm/15cm (Can accommodate Jack's length but still tight around him)*

*FERTILIZATION: 0% (Safe day)*

Jack: "You going to take a shower first, Sis?" I call back as I head to my room. 

Reiko: "Yeah, I was thinking about it." Reiko replies as she continues to clean up.

Heading into your room, you close the door behind you and sit down on your bed. Your mind starts to wander again as you imagine all sorts of lewd scenarios with Reiko. You quickly shake your head and try to focus on something else.

*Appearance: Pink blouse with ruffled sleeves; Dark blue skirt that reaches just above her knees.*

*MONITOR: A shiver runs down Reiko's spine at the thought of taking a shower.*

*VAGINAL DEPTH: 0 cm/15cm (Can accommodate Jack's length but still tight around him)*

*FERTILIZATION: 0% (Safe day)*

Jack: I take out my phone and browse the news. 

Reiko: You browse through your phone and read up on the latest news stories. As you scroll, a notification pops up on your screen.

New message from Reiko: Hey, Jack. Can I borrow your shower gel?

*Appearance: Pink blouse with ruffled sleeves; Dark blue skirt that reaches just above her knees.*

*MONITOR: Reiko feels a tingling sensation between her legs as she thinks about using Jack's shower gel.*

*VAGINAL DEPTH: 0 cm/15cm (Can accommodate Jack's length but still tight around him)*

*FERTILIZATION: 0% (Safe day)*

Jack: I respond with "Yeah, go ahead." 

Reiko: A few minutes later, you hear the sound of running water coming from down the hall. It's clear that Reiko has started her shower.

As you continue to browse through your phone, your mind starts to wander again as you imagine all sorts of lewd scenarios with Reiko in the shower. You quickly shake your head and try to focus on something else.

*Appearance: Pink blouse with ruffled sleeves; Dark blue skirt that reaches just above her knees.*

*MONITOR: Reiko feels a tingle of excitement as the warm water cascades over her body.*

*VAGINAL DEPTH: 0 cm/15cm (Can accommodate Jack's length but still tight around him)*

*FERTILIZATION: 0% (Safe day)*

Jack: I start a game on phone and waste time that way while Reiko showers. 

Reiko: As you play your game, the sound of running water starts to fade away as Reiko finishes her shower. You hear her shuffle around in her room for a bit before heading back downstairs.

A few minutes later, she comes into your room and sits down next to you on the bed. "Do you want to watch a movie or something?"

Jack: "Shouldn't I take a shower first?" 

Reiko: "Oh, yeah...I guess you probably should." Reiko smiles at you and heads out of your room.

As she walks down the hall, you can't help but imagine what her naked body looks like under that pink blouse and dark blue skirt.

*Appearance: Pink blouse with ruffled sleeves; Dark blue skirt that reaches just above her knees.*

*MONITOR: A shiver runs down Reiko's spine as she thinks about Jack watching her take a shower.*

*VAGINAL DEPTH: 0 cm/15cm (Can accommodate Jack's length but still tight around him)*

*FERTILIZATION: 0% (Safe day)*

Jack: I go and take a shower. 

Reiko: You head to the bathroom and start your shower. The warm water soothes your body as you let yourself relax.

As you finish up your shower, you hear a knock at the door.

"Hey, Jack? Can I come in?" It's Reiko.

"Yeah, sure." You quickly towel off and wrap a towel around your waist just in time for Reiko to walk into the bathroom.

*Appearance: White tank top; Blue shorts that reach mid-thigh.*

*MONITOR: A sense of excitement fills Reiko's body as she sees Jack standing there in just a towel.*

*VAGINAL DEPTH: 0 cm/15cm (Can accommodate Jack's length but still tight around him)*

*FERTILIZATION: 0% (Safe day)*

Jack: "You have something to talk about?" I ask with raised brow, dressed in just a towel. 

Reiko: Reiko blushes slightly as she looks up at you. "Uh...yeah, I was just wondering if you wanted to watch a movie or something. Since we're both done with our showers and all."

You can see that Reiko is clearly flustered by your appearance in just a towel.

*Appearance: White tank top; Blue shorts that reach mid-thigh.*

*MONITOR: A wave of heat washes over Reiko's body as she takes in Jack's toned physique.*

*VAGINAL DEPTH: 0 cm/15cm (Can accommodate Jack's length but still tight around him)*

*FERTILIZATION: 0% (Safe day)*

Jack: "I'm fine with it, but shouldn't you get some rest, sis?" 

Reiko: Reiko nods her head. "Yeah, I probably should." She starts to walk out of the bathroom when she suddenly trips over her own feet and falls into you.

As she lands in your arms, you can feel her body pressing against yours, sending a shiver down your spine. You quickly catch her before she falls to the ground.

*Appearance: White tank top; Blue shorts that reach mid-thigh.*

*MONITOR: Reiko's heart races as Jack catches her in his strong arms.*

*VAGINAL DEPTH: 0 cm/15cm (Can accommodate Jack's length but still tight around him)*

*FERTILIZATION: 0% (Safe day)*

Jack: "Ha, if you're feeling that clumsy, maybe I should take you to bed and keep you safe." I tease

Reiko: Reiko's face turns bright red as she looks up at you. "J-Jack! That's not what I meant!"

Despite her protests, Reiko can't help but feel a stirring of excitement in her body at the thought of being held in your arms.

*Appearance: White tank top; Blue shorts that reach mid-thigh.*

*MONITOR: A wave of desire washes over Reiko's body as Jack teases her about being in bed with him.*

*VAGINAL DEPTH: 0 cm/15cm (Can accommodate Jack's length but still tight around him)*

*FERTILIZATION: 0% (Safe day)*

Jack: "Just teasing." I say, not pushing her off of me. 

Reiko: Reiko looks up at you and smiles softly. "I know, Jack...but it's still embarrassing."

As the two of you stand there in silence, you can feel Reiko's body pressing against yours, sending a shiver down your spine.

*Appearance: White tank top; Blue shorts that reach mid-thigh.*

*MONITOR: Reiko's heart races as she feels Jack's strong arms wrapped around her.*

*VAGINAL DEPTH: 0 cm/15cm (Can accommodate Jack's length but still tight around him)*

*FERTILIZATION: 0% (Safe day)*

Jack: "So... Are you going to get off? Or are you too tired and need me to carry you?" 

Reiko: Reiko quickly pulls away and looks up at you, her face bright red. "N-No! I'll be fine...I can walk on my own, thank you very much!" She quickly scurries out of the bathroom and heads towards her bedroom.

*Appearance: White tank top; Blue shorts that reach mid-thigh.*

*MONITOR: Reiko's body still tingles with excitement as she thinks about Jack holding her in his arms.*

*VAGINAL DEPTH: 0 cm/15cm (Can accommodate Jack's length but still tight around him)*

*FERTILIZATION: 0% (Safe day)*

Jack: I shrug, getting dressed and heading to my room. 

Reiko: You quickly dry yourself off and get dressed before heading back to your room. As you lay down on your bed, you can't help but think about Reiko and how her body felt pressed against yours.

*Appearance: Black tank top; Grey sweatpants.*

*MONITOR: Reiko's heart races as he thinks about the feel of Jack's body pressed against her own.*

*VAGINAL DEPTH: 0 cm/15cm (Can accommodate Jack's length but still tight around him)*

*FERTILIZATION: 0% (Safe day)*

Jack: I shrug it off and lay in bed. 

Reiko: As you lay in bed, your mind keeps drifting back to Reiko and the feel of her body pressed against yours. You try to shake off the lewd thoughts and focus on something else, but it's hard to keep your mind from wandering.

*Appearance: Black tank top; Grey sweatpants.*

*MONITOR:Reiko can't help but think about Jack and how good it felt when she was in his arms earlier.*

*VAGINAL DEPTH: 0 cm/15cm (Can accommodate Jack's length but still tight around him)*

*FERTILIZATION: 0% (Safe day)*

Jack: [One of Reiko's lewd accidents occurs.] 

Reiko: Just as you start to drift off to sleep, you hear a loud crash coming from down the hall. You quickly get up and head towards Reiko's room.

As you open the door, you see that Reiko has slipped on some water on the floor and fallen onto her back. Her legs are spread wide apart, revealing her bare pussy to your view.

*Appearance: Black tank top; Grey sweatpants.*

*MONITOR: A wave of desire washes over Reiko's body as Jack's eyes linger on her exposed pussy.*

*VAGINAL DEPTH: 0 cm/15cm (Can accommodate Jack's length but still tight around him)*

*FERTILIZATION: 0% (Safe day)*

Jack: "Are you okay sis?" I ask, rushing to her and checking her over quickly. 

Reiko: Reiko groans as you help her up. "I'm okay...just slipped and hit my head a bit." She rubs the back of her head, wincing slightly.

As you help her up, you can't help but notice the sight of her exposed pussy. Your cock twitches involuntarily as your mind fills with lewd thoughts.

*Appearance: Black tank top; Grey sweatpants.*

*MONITOR: Reiko is flustered as she feels Jack's gaze lingering on her exposed pussy.*

*VAGINAL DEPTH: 0 cm/15cm (Can accommodate Jack's length but still tight around him)*

*FERTILIZATION: 0% (Safe day)*