It was evening. I had just returned to my dorm room. I dropped my backpack and went to the computer, unable to wait to play video games. Stangely, I could feel another presence in the room. But I would swear no one else was there with me. Oh, whatever.

Soon after I had started reveling in my hobby, I heard a knock at the door. Darn, right when I was about to break my record in the game.

'Who can be at this hour?' I wondered as I headed to the door.

'Surprise, bro!'

'SUGUHA?'

'What?' she shrugged as she casually dropped her suitcase. 'Don't I have the right to visit my own brother now that my school's spring break has started?'

I chuckled. Suguha was wearing her school's uniform, which was similar to my school's uniform. She removed her shoes and sat on my bed, cross legged. I sat opposite her and we started chatting about our school days.

At some point, I looked around.

'Huh? What's wrong?' Suguha asked curiously.

'I have had the feeling for a while that someone else is in this room,' I stroked the back of my head.

She raised an eyebrow in disbelief. 'Like some supernatural spirit?' she asked.

I chuckled. If only she knew I have come across (and fucked!) a ghost indeed. Anyway, my sister started producing playful ghost sounds.

'Stop mocking me,' I slapped her bare knee.

'You'll pay for that,' she giggled and charged at me.

We started scuffling like kids on the bed. Of course, soon, our teenage hormones took charge and this turned sexual. Well, you know how it goes; we were now nude and making out like there was no tomorrow. Still I couldn't shake off the feeling that someone else was nearby.

Eventually, Suguha positioned me on my knees and started giving me a blowjob. I was now enjoying the sensation of her mouth around my cock as well as her rear view. Not wanting to just look, I raised a hand and stroked her back. Then I groped her ass and finally planted some slaps on her buttcheeks, making her moan against my dick.

'Okay, that's enough,' I whispered and leant towards the drawer, intending to get a condom.

'NO,' Suguha snapped, preventing me from leaning by holding me by my penis! 'This time, I'll give you a blowjob all the way.'

'That was enough of a blowjob,' I sighed. 'Now I want your vagina.'

She gave me a threatening look. 'Either you'll let me give you a full blowjob this time or you'll never get any of my pussy ever again!'

I gulped. 'Okay,' I said in a low voice.

And so, I kept enjoying the oral session, which went on until I climaxed in my sister's mouth. Sugu successfully kept her position and swallowed every last drop!

We collapsed on my bed, panting, looking at each other and smiling.

'When I recharge, I'm gonna fuck you so hard that your vagina will be torn apart,' I declared.

'I want to see you trying,' Sugu replied with a provocative smile.

'KIRITO! SUGUHA!'

We both sat up, shocked to see a nude Asuna coming out from under the bed! That was not the first time she and Suguha met (they knew each other from long ago, before I began attending that academy, when Asuna and I were still a vanilla couple and she would come to my house sometimes), but it was definitely the first time they met under such conditions!

'Asuna... wha... what are you doing here?' I managed to stutter.

'I sneaked into your room when you were missing, undressed under the bed and waited to give you a pleasant surprise,' she explained. 'And I was the one to be surprised instead!'

'Hey, Asuna,' a smiling Suguha drew her attention, raising her hand and greeting the other girl casually.

For a moment, Asuna took a casual expression as well, as if the circumstances were totally normal, turned to my sister and replied cheerfully: 'Hey, Sugu. Long time no see.' Then, her shocked expression returning, she turned back to me and rhetorically asked: 'Kirito... you have a sexual relationship with your sister?'

'Well... ummm...' Realizing there was no way to sugarcoat this, I just admitted the truth. 'Yes, I do,' I sighed.

'I... I don't know what to say,' Asuna said, dumbfounded, getting on the bed, ignoring the fact that all three of us were nude, with her palms supporting her torso, her legs perpendicularly to her body.

'Do you like the taste of my bro's cum, Asuna?' Suguha asked, keeping acting as if that situation was not weird at all! I glared at her.

'Actually, I haven't tasted it. I'm not into blowjobs,' Asuna answered. 'But I love it when his cum flows inside me.'

'Well, I haven't felt that sensation, since, with me, he uses condoms,' Suguha replied. 'But I adore it when he plays with my boobs.'

'I admit my boobs aren't as large as yours,' Asuna eyed my sister's chest. 'But when he kisses my neck, I just can't resist him.'

For a few more minutes, the two girls kept discussing the experiences they had lived with me, with totally casual expressions, as if they were two besties discussing something totally trivial at some cafeteria, as if they were not sitting nude and cross legged on a bed opposite each other, as if Asuna had not seen Suguha giving me a blowjob a few minutes earlier!

How was I supposed to feel? 'Umm... girls...'

They turned and glared. 'Stay out of this,' they snapped simultaneously, making me gulp.

Having got the message, I dressed and went out, to let them enjoy some girl time.

'Enjoy hanging out with my girlfriend,' I called out sarcastically to Suguha before exiting the room. 'Just try not to screw her as well.'

'Can't make any promises,' Sugu giggled.

I rolled my eyes and left.

Asuna's POV...

When Kirito left the room, Suguha and I looked silently at each other for a while and then burst into laughter. Poor boy! We're such bitches to him sometimes!

We chatted like besties some more. At some point, Suguha placed her hand on my leg, which I perceived as an innocent gesture of affection back then. 'I've got an idea,' she said. 'How about you come and stay with us during the summer vacation?'

I raised an eyebrow. 'Don't you and your parents have any plans for the summer?'

'Well, mom and dad will go somewhere on vacation, but I'll find some excuse not to come along,' she answered. 'I mean, I'd never miss the chance to stay alone at home with Kirito kun for two months or three! And I'm pretty sure bro will be more than happy to stay home with me as well.'

'Well,' I said, pensive. 'My parents will be kinda disappointed if I don't go on vacation with them. But maybe I will find some excuse to get away and stay with you guys, even if it's not for the whole summer...'

She interrupted me with a kiss on the lips! 'Does that help you decide?'

'Yes!' I said instinctively.

Oh, boy, this will be a long summer! Kirito, Suguha and myself, with a house all to ourselves!