So, guys, during the time since the last chapter was published, did you realize yourselves, too, what did not make sense? No? You're slow!

So, here's the answer: If that was an alternate reality where Lincoln never existed, how can Lisa have a photo of him in her basement?

Could she... could she be the one that had warped reality? Could that be the doing of one of her inventions?

I have to confront her, to...

'THINK FAST,' Lynn's happy voice interrupted my thoughts.

The 13 year old redhead had just stormed into my room and tossed a ball at me with force.

I was anything but prepared to catch it, so the ball hit me. Wanna guess where it hit me? Yeah, you guessed right!

With bulging eyes, I clutched my crotch and fell off my chair.

'GOSH, I'M SO SORRY,' Lynn gasped.

She ran over to me and crouched. 'Are you okay, bro?'

I tried to talk, but all I managed to do was cough.

'Do you think I'm ok?' I asked rhetorically when I finally managed to utter some words.

'No, of course not,' she answered apologetically. 'A man can't be okay after being hit there. I mean, I know from experience...'

Her eyes bulged. She covered her mouth with her palm, having realized what she had just said.

But I, too, was shocked. Shocked to hear that. In fact, I was so surprised that I forgot my pain and sat up. 'Wait, what do you mean when you say you know from experience?'

Lynn blushed. She hesitated. But, in the end, she guessed that, since it had slipped her tongue, there was no turning back anymore.

She sighed. 'I guess you're old enough to know the truth,' she whispered, stood up and locked the door.

She looked at me. 'Why do you think that, despite being a girl, I have the same name as dad?'

'Err, never wondered,' I scratched my nape.

Lynn lowered her shorts. That was the biggest surprise in my life.

'A DICK!' I cried.

'Sssh,' Lynn placed her finger on her lips.

'You're a boy?' I wondered.

'No,' Lynn shook her head.

'A trans?' my eyes widened anew.

'Not exactly,' Lynn tried to explain. 'I'm an intersex.'

'Intersex?' I raised an eyebrow.

'It means that, technically, I'm a girl,' Lynn carried on, 'but I was born with... errr...'

'A dick,' I smiled, repeating what I had said earlier, now in a lower voice.

'Yes, a dick,' Lynn blushed again.

Come to think of it, it was kinda cute to see that strong and confident girl feeling embarrassed.

Lynn turned her eyes elsewhere. 'I hope this revelation does not change the way you see me, Kiri...'

Her words were interrupted by me. I had stood up and was ruffling her hair playfully.

'Stop!' she giggled.

We ended up on the floor where we struggled playfully for a while.

In the end, we somehow ended up me on top of her.

We paused. We exchanged serious, horny looks. We gulped.

Our lips united and we engaged in a passionate making out session.

'Isn't this weird?' Lynn gasped when the kiss was broken. 'I mean, we're siblings.'

'Well, it's not weirder than you having a penis,' I laughed.

'I guess you're right,' she joined me in my laughter.

We resumed.

We were now undressing each other while exploring each other's bodies. I was taking off her socks and kissing her foot bridges while she was taking off my shirt and groping my back. I removed her shorts and kissed her legs while she was desperately trying to do the same to me, which she finally did. I removed her underpants, eliciting a squeal from her as she stroked my chest and slammed her soles down on the floor in anticipation. She took off my underpants while giving me a brief blowjob.

She stood up and wrapped my blanket around her crotch. 'Wait,' she whispered sweetly. 'I'm going to my room to fetch condoms.'

'You have condoms?' my eyes widened.

'Err, yeah,' she chuckled awkwardly. 'I use them with girls from the sports teams I'm into, when we have... you know... private moments in the school showers...'

'It's okay,' I comforted her. 'What you do with them is none of my business.'

'You're the best,' Lynn winked, now relaxed.

She unlocked the door, looked around to make sure nobody was watching, sneaked into her room and came back soon with her condoms. She locked the door anew.

We got on the bed, sat cross legged opposite each other and remained silent for a while.

'Umm,' I chuckled, trying to figure out how we would do it. 'Who will put this on? You or me?'

'I really don't know,' she shrugged, chuckling too.

In the end, we arbitrarily decided that I would be the one to put on the rubber. Lynn pinched the prophylactic's tip and rolled it onto my penis.

She lay down and raised and opened her arms and legs. 'Come here,' she smiled.

I lowered my upper body onto her and started exploring her still breastless chest with my hands and lips.

Finally, Lynn wrapped her arms and legs around me. We began fucking, rubbing our penises against each other.

'Fuck me, bro. Harder. Faster,' she would pant whenever I wasn't kissing her on the lips.

We fucked for a long time, the bed squeaks being music in our ears.

I orgasmed. Before her! Lynn patted me on my back in disappointment as I screamed.

I collapsed on her, panting. We stayed like that, for a while.

'You know, Kirito,' she sighed. 'I may have a penis, but I'm still a girl. Girls take their time to orgasm.'

'I know. I'm sorry,' I blushed, sitting up. 'If there is anything I can do to make up for my selfish act...'

Lynn smiled deviously. 'Actually, there is!'

I gulped. What was she up to?

The intersex girl took a new condom and rolled it on her penis this time. 'Have you ever tried anal, Kirito?' she asked.

'Umm, yeah,' I answered, 'though I wasn't on the receiving end.'

'Then be prepared for a brand new experience, boy,' she laughed like an evil witch and rolled me so that I was lying on my belly.

'Get on all fours,' she commanded.

I obeyed, with one more gulp.

I felt Lynn's soft, cool, lovely hands gripping my waist.

'Want me to do it slowly or hardcore?' she drawled in a playfully threatening tone of voice.

'Anything that pleases you, sis,' I mumbled, scared.

'Hardcore it is!' she laughed triumphantly and shoved it in my ass.

WHOAH, THE PAIN! That is... that is... not bad at all!

Lynn was forcefully thrusting her organ in and out of my butthole. I was gasping and moaning in my newfound sensations. If I had to compare it to something, imagine your butthole is itching you like hell and you scratch it deep inside, discovering the best hidden nerve endings.

From time to time, I would turn and look at the nude Lynn to increase my arousal. If a man was doing that to me, I wouldn't be aroused, but experiencing it with a hot girl behind me is another story!

'YES, I'M CUMMING, BRO,' Lynn screamed in the end.

I felt what I perceived as a rear orgasm.

We collapsed next to each other, panting and smiling with joy.

'Please, don't tell our sisters my secret,' Lynn said at some point.

'Nobody knows except mom and dad?' I asked.

'Well, Lori knows,' she answered. 'But I think the others are not ready to know yet. Especially the younger ones, Lola, Lana and Lucy, would freak out.'

'What about Lisa?' I chuckled.

'I guess she would want to study me as a lab rat,' Lynn said and we laughed together.

Speaking of Lisa, I had to confront her sooner or later.

Later, Lisa was in our room, conducting her chemical experiments. She was wearing her white robe over her green sweater and brown pants.

I stormed into the room.

'Be quiet, Kirito,' she turned and yelled, annoyed. 'My experiments require concentration.'

'Who's this?' I snapped, showing her the photo of Lincoln.

Her eyes widened. 'Linco... I mean, I DON'T KNOW!'

I could almost hear her heart beating!

'That photo was in your bunker,' I carried on.

'How did you enter there?' she snapped.

'Quit defending yourself and tell me who this is,' I demanded to know.