Do what you can to get rid of it!

Leaving your sister to get back to her work-out, you stand up with a stretch and wander out of the room. With a sniff, you realise you stink - the absolute stench of sweat and sex radiating off you. You hop into the shower to clean some of the grime off, cock still rock-hard the whole way through to your immense confusion. Even after drying off, your boner is still looking hard enough to drill a hole in a wall, leaving you mystified as to what could possibly get it back down. Life with a constant erection sure would have its benefits, but you can only think how much those are outweighed by the downsides. Determined to kill this hard-on, you burst out of the bathroom and straight into Mei's room, your cock leading the charge by several inches.

Your younger sister is lying on the floor, skin still as bare as when you saw her last. She's facing away from you, her eyes on the TV screen as she furiously clicks and clacks at a game controller, playing some fighting game with a name so full of extra words appended to its title that you couldn't recall the name if you tried. Fully focused on her game, she doesn't notice you until you're right on top of her, straddling her legs as your cock is inexplicably drawn to her tight, unused holes.

"What are you-- oh." Mei spots your boner and puts two and two together. The look on her face says it all - I couldn't stop him from **** me if I tried, so I suppose I'll just let him do it.

"Guess it can't be helped," she sighs slightly as she turns back to her game. "Just don't mess with my combos, alright?"

A grin crosses your face. You can't just leave it there.

"Mei, you're still a virgin, aren't you? Do you realize that I, your brother, am about to **** you and take your virginity?" You grab a hold of one of her soft ass-cheeks for emphasis, enjoying the smoothness of her skin as Mei pauses her game once again and turns her head back to you.

"You're going to **** me eventually, so it just can't be helped, okay?" She shrugs dismissively.

"Obviously, I don't want you to take my virginity, and I definitely don't want you to fill me full of your seed, but you're going to do it anyway." With a flick of her head, she looks back to her game.

"So, just hurry up and fuck my holes already, would you? I'm trying to concentrate."

Your sister has accepted the facts. You're a **** who would even take his own sister's virginity, and that just can't be helped. It looks like there really isn't anything for it but to live up to everyone's expectations, you think to yourself with a shrug. You reach down and begin to press your shaft into Mei's tight pussy, the head sliding in with a little effort as you find a comfortable position. Lifting Mei's butt slightly, you shove a pillow under her, allowing her to easily keep her holes open to you without either of you having to worry about keeping them up. In this position, your cock slides in easily, the first to ever plumb the depths of your sister's virginal hole. To her credit, Mei doesn't even wince. If anything, it looks like she's more determined to play her game than ever, trying to keep her mind off the fact that her half-brother's dick is currently filling her up.

You begin pounding in earnest, starting slow as you ease yourself in and as Mei's hole begins to accept you, increasing in pace as you get into a good rhythm. Mei is quite small, something you've not thought much about until recently, but you're beginning to see the appeal as you can feel your cockhead kiss against something deep inside - almost certainly poking at or even through her cervix. Your hands run along her body, first playing with the softness of her ass before sliding up her slender and smooth back. A shudder runs up Mei's body as you run a hand along her sides and a chuckle escapes her lips.

"Th-that tickles!" she scolds you, concerned more with the sensation of your fingertips than the steady and constant penetration of her slit. You slide your hands underneath her, feeling for her nipples as you cuddle into her body, your warmth mingling together as you penetrate her in an almost prone position. Her breasts are basically non-existent, the slightest hint of softness topped with delicate nipples. You can't see Mei's face, so it's hard to tell exactly how much your ministrations are affecting her.

A loud burst of music startles you suddenly as Mei's phone goes off. Without pausing her game, she reaches over, answers the phone and tucks it into her shoulder. You've always respected your sister's ability to multitask, but you never imagined that you would be seeing her answer the phone while you fucked her.
"Hey Sunny, what's up?" From the name, it sounds like your sister's friend Sun-Hee, a Korean girl she usually hangs out with. Thinking about her now is giving you ideas - but not doing anything to help get rid of this boner. You quicken your pace, as though determined to drown out your sister's conversation with the sounds of flesh on flesh.

"Sick? No, I'm not sick," Mei giggles. "I had to stay home today to get used to my brother. Yeah, he's decided he wants to **** everyone in the house constantly ... no, it's not a big deal. He was gonna do it anyway, so it can't really be helped, don't you think?" She laughs again. "Hey, did you grab my homework for me? Cool, just bring it around when you can. ... Sorry, I can't really go over to your place today," she looks back at you for a moment, "Seeing as my brother is insisting on filling me full of his cum today. Uh, you can come over here if you want, but ... You know what? It'll work out fine, I'm sure. Okay, seeya then!"

It looks like Sun-Hee's going to be paying a visit later. You nearly lose yourself in your own thoughts - she's an asian girl too, so you could get away with whatever you want with her--

"Are you gonna cum any time soon? I don't wanna be stuck under you all day." Your sister tactfully snaps you back to reality - the reality of your cock pounding its way in and out of her. Driven over the edge, you feel your cum surge forth before you even have a chance to react. Before you know it, you've already blasted several shots of your thick seed directly into Mei's womb. Pulling out, you spray a few more times, thick ropy strands of pearlescent cum decorating her butt, back and glossy black hair. You sit back up, panting a little as you roll off the top of your half-sister.

"Did you really have to cum inside?" Mei frowns cutely, "Geez, I'm gonna get pregnant ... " With those words, your cock shoots straight back up to attention. You sigh.

"Damn ... I guess it can't be helped, can it?"