I was inspired to write this chapter after coming across a SAO drawing on Reddit, called 'Magic Flexible Quadruple Ended Dildo'.

I was lazily sitting on Seven's bed and watching the child prodigy sitting at her desk and conducting her experiments.

She was wearing her white uniform over her school uniform and her safety googles (she was so cute like that; not that she's not cute at other times, mind you!) and examining a vial containing a green liquid.

I stood up and walked over to her. 'What is this?' I asked curiously, putting my finger in it, in order to tease her.

'Don't touch it,' she shrieked, lifted her leg at lightning speed and pushed me onto the floor with a powerful, side kick.

'Ouch,' I giggled, rubbing my ribs.

'This is cells culture, idiot,' Seven explained. 'If everything goes according to my calculations, the cells growing in here (showed the vial) will evolve into a new life form!'

'Wow!' I said, genuinely impressed, as I was standing up. 'I bet you hope to present this to some scientific conference and win a nobel prize or something.'

'Nah,' Seven waved her hand negatively, in an unlike her casual tone of voice. 'I just want a cute pet to cuddle!'

I fainted in surprise in a Japanese gag manner.

'You're doing all this just so that you have a pet?' I cried as I was standing up once more. 'Wouldn't it be simpler to go and buy one?'

'I want the perfect pet,' Seven exclaimed, her eyes blazing with excitement. 'One that will not be drooling or pooping at places and times it's not supposed to, one that won't wake me up with whining sounds, one that...'

'...will give you good cunnilingus from time to time,' I teased her, eliciting one more side kick from the feisty prodigy. 'Ouch!'

As I was coming back from Seven's room to my room, I noticed a figure standing in front of the door to my room. I couldn't tell who it was, because they were wearing a cape with a hood. Whoever it was, they were obviously waiting for me.

'Umm, excuse me, may I help you?' I drew their attention.

'Yes!' the girl snapped, threw the cape away and turned around.

'SUGUHA!' I cried.

'Nice to see you too, bro,' she replied, dropped her suitcase and fell into my arms.

We hugged for a while, giggling, Suguha swaying her hips and dancing in my arms.

'Come in,' I finally whispered.

I unlocked the door and we entered my room.

'So, how come you're here?' I asked. 'Don't tell me that, in your school, you decided to have your Christmas break THAT early!'

'It's not that,' Sugu giggled. 'My school will remain closed for one week because an... errr... accident with the pipes in the toilet flooded it!'

'Oh, lucky you,' I commented.

'Yeah, lucky us,' Suguha giggled.

Her tone of voice made me wonder whether it was really an accident or whether that little demon had done anything to cause it just so that she would earn an extra week of holiday. Oh, whatever, she would never admit it anyway, so there was no point in further questioning.

'I want to meet your friends, Kirito kun,' Suguha declared determinedly while placing her suitcase next to my bed. 'Last time I visited you here, I didn't stay long enough to meet them, but, this time, I won't leave until I have met all those exciting girls you've been talking to me about.'

'Well, they're too many for you to meet ALL of them in one visit,' I chuckled, stroking my temple. 'But, tomorrow, after school, I can organize a meeting with the ones I hang out with most of the time (Asuna, Leafa and Seven)'.

'Cool, I'm in,' Sugu cried excitedly, clapping. 'Let's go somewhere in the city close to the academy premises.'

'Do you have any particular place in mind?' I asked casually.

Suguha placed her finger on her chin and gave me a meaningful look. 'Since the weather is still good, let's hit the public pool!'

Oh, no!

'Suguha!' I eyed her like a strict parent. 'Do you want to just to get to know my friends, or do you have anything naughty in mind?'

'We'll see,' she answered with an innocent expression, hands behind back. 'Why? Do you mind?'

'I'm just saying that, if you have any naughty intentions for tomorrow,' I sighed, 'and, considering there is only one bed in here, tonight, we'd better sleep totally innocently, like true siblings, so that we save some stamina for whatever ideas your perverted mind might generate tomorrow.'

Sugu laughed.

'Okay, you have my word,' she closed her eyes and bowed in an earnest fashion. 'Tonight, we'll be just siblings and nothing more. We'll sleep innocently, like when we were little and I would cuddle in your bed with you whenever I had a bad dream.'

Ahh, pleasant, childhood memories. I guess that if, back then, someone had told Suguha that, someday, she'd screw her brother regularly, she'd have had even more bad dreams!

And so, that night, we sleeped tenderly, like two vanilla siblings. Without having sex. Okay, we had! Just once!

Leafa's POV...

Asuna and I arrived at the public pool before the others the next day. Now we were lying on two pool chairs and sunbathing. I was wearing a white bikini and Asuna was wearing a red one. I was lying face down, hands under chin, eyes closed, moaning in pleasure with the sun rays caressing my awesome bod, ocassionally lifting one calf. Asuna was lying on her back, knees raised, reading a book. We both were wearing sunglasses.

'So, As,' I intiated conversation at some point, the redhead rolling her eyes, annoyed by me insisting on calling her by that nickname. 'What kind of person is Kirito's sister?'

'Well, I like her better than you,' Asuna took her eyes off her book and corrected her glasses, 'even though you both are equally slutty.'

I lifted both calves, removed my glasses and eyed my frenemy provocatively. 'As slutty as me?'

'Seriously, sometimes I think she and you are the same person,' Asuna sighed.

I laughed and stood up. 'I'm bored of waiting, red,' I clapped. 'Let's dive in the water and enjoy a swim until the others are here.'

'I don't want to, but I'll do it,' Asuna removed her glasses and followed me.

And so, we dived.

Seven's POV...

I was walking to the swimming pool, wearing my grey bikini, dragging my new pet behind. It was so little and cute. It resembled a purple blob. Tentacles protruded from various parts of its body. Two tentacles on its head had two eyes on their ends. It was just crawling on the pavement, since it had no lower limbs.

At some point, I turned around for the umpenteenth time in order to give it another look of adoration and say to it something like: 'Who's mommy's pet? You are, you are!'

Strange, it was a little larger than I remembered... uh oh! Is it just me or is it growing right now?

The creature was growing, and growing... until it broke the leash. I screamed. With a roar, the monster started crawling towards the pool at high speed.

I was still and dumbfounded for a while. What in the name of the scientific genius that I am had gone wrong?

Wait a minute... Kirito had put his finger in the vial! It seems his DNA had mixed with that of the creature! As a result, that monster was probably a perverted freak like Kirito!

Suguha and I reached the pool. Sugu was wearing her blue bikini and I was wearing my black swimtrunks.

I scanned the area with my eyes to find Leafa and Asuna.

Suddenly, something like the roar of a giant creature was heard.

Everybody in the premises started screaming and running. That was when I realized Asuna and Leafa were in the water swimming.

Before I could decide whether to try to save Suguha first or dive to save the other two girls, the monster grabbed me with one of its tentacles. It also grabbed Sugu, Asuna and Leafa, all screaming with terror. Everybody else in the pool had run away, so it was now just the four of us, in a deserted place, in that monster's mercy! Can I just have a normal day?

With its countless tentacles, the monster started ripping off our swimwear, leaving us all nude. The girls screamed and screamed as the monster's tentacles massaged their bodies on various inappropriate parts, me unable to tell whether they were screams of terror or screams of pleasure.

The monster held me in front of the three girls, all trapped, in one tentacle each. The creature noticed that my penis was erect. (Hey, I'm only human.)

It positioned its tentacles so that the girls' vaginas were now exposed. The girls gulped. The monster started playfully moving me towards one girl or another, as if it intended to force my dick in her vagina, only to stop the last moment, with my penis just tickling that girl's pussy, causing that girl to moan in terror and pleasure nonetheless.

It continued that for a long time, my penis tickling all three girls' vaginas alternately. I was excited... and scared! And I bet my girls felt that way too.

It was obvious that, soon, the monster would insert my dick into one of the vaginas. I only hoped it would be Asuna's vagina, since I was not wearing a condom.

Luckily, it was Asuna's vagina after all! The monster thrusted me towards the redhead, my dick shoved in her pussy. Asuna closed her eyes and screamed, instinctively wrapping her legs around my waist.

We started fucking, in the air, trapped in the monster's tentacles, Asuna flailing her arms, the other two girls watching us, awed.

At some point, the monster moved Suguha towards us. Upon the upcoming collision, my sister widened her eyes and instinctively opened her legs, ending up behind me, with her legs around me and somewhat tangled with Asuna's legs (which also were around me) and her pussy being rubbed against my ass.

We fucked like that for a while, in an unplanned threesome. Suguha's foot touched Asuna's flailing arm, Asuna's foot touched Suguha's hip. Suguha's other foot ended up on my shoulder. Needless to say all that rubbing and skin to skin contact caused our screams to increase in intensity.

It was Leafa's turn to join the party! The monster moved her towards our united bodies mass.

It positioned her with her face over that of Suguha's.

'Hi, I'm Suguha,' my sister introduced herself amid her moans as her vagina was rubbed against my ass (and the sole of her foot over my shoulder was licked by Asuna from time to time, whenever she was not busy making out with me!)

'I'm Leafa. Nice to meet you,' Leafa replied amid her moans, as the monster's tentacle was thrusted in and out of her vagina.

Finally, the monster repositioned Leafa so that her and Suguha's breasts were now being rubbed against one another. Two huge pairs of breasts rubbed together! That caused both my sis and Leafa to let out a loud scream.

'My bro has been telling me so much about you,' Suguha tried to maintain conversation amid that scream.

The monster's free tentacles got wrapped around the two huge pairs of breasts, which were still being rubbed together, and squeezed them, adding to the girls' pleasure and making their screams louder.

'I bet we'll get along really well, when this is over,' Leafa replied to Suguha amid her screams.

The monster repositioned Leafa once more, now making her sit on Suguha's face cowgirl style!

Suguha instinctively started licking and sucking Leafa's pussy. Leafa's thighs were being rubbed against Suguha's breasts and her calves were being rubbed against Suguha's ribs. Asuna further extended her foot touching Suguha's hip and used it to caress Leafa's calf.

Our four bodies now constituted a united mass, an aerial orgy, our screams reverberating throughout the deserted premises.

With her breasts rubbed against my back, Leafa leant and started kissing and groping, sometimes my nape and neck, sometimes my shoulders, sometimes the bridge of Suguha's foot over my shoulder.

Without interrupting her cunnilingus, Suguha raised her arms and started slapping Leafa's ass.

'Harder, Sugu,' Leafa moaned. 'I deserve it. This is all my fault.'

Sugu took a totally casual expression for a moment. 'Wait, how is this all your fault?'

'I DON'T KNOW,' Leafa screamed. 'JUST SLAP MY FUCKING ASS!'

Suguha struck the blondie's buttcheeks, harder and harder, until they were red.

Seven's POV...

I ran over to the pool, fumbling underneath my bikini bottom for a whistle I had made just in case. One that produced hypersonic sounds that could tame that beast.

When I arrived there, though, with my whistle in my mouth, about to blow it, I faced the most... unique spectacle I had ever seen! The bodies of my four friends, trapped in the air, joined together and... I wasn't sure whether they were enjoying this or not.

'Umm, fellows,' I drew their attention shyly. 'Do you need any help?'

'Yes!' Asuna screamed pleadingly.

'No!' Kirito and Leafa screamed simultaneously.

'I don't know!' Suguha screamed.

Finally, I decided to let them entertain themselves for a while.

At some point, I interrupted my playing with Asuna's breasts and turned to kiss Suguha's foot (for the umpenteenth time) over my shoulder. At the same time, Leafa leant to kiss it as well and Asuna leant to lick it. As a result, our mouths engaged into a contest over who would enjoy that foot! A contest that ended up in a threeway kiss between me, Leafa and Asuna, around Suguha's foot, all three of us tasting it at the same time we kissed one another's lips.

It was at that moment that all four of us orgasmed! Our simultaneous screams almost caused the water to evaporate!

The monster gently placed our nude bodies on the floor next to the pool. All four of us stayed lying there, too spent to do anything.

Seven blew her whistle and the monster shrank back to normal size.

Before I fell asleep of exhaustion, I felt Seven dragging me over to the dressing rooms, whispering 'Once again, me, the genius, have to lead the dummies to safety.'