CHAPTER 3

Once she found where Mega Man was - an access terminal in a remote part of the mansion - Roll pushed open the door quietly to not startle him. For a robot, information accumulation could be daunting and needed concentration.

His chair was back to her so only the top of his head showed. But she could hear him breathing. Heavy, rugged. On the computer screen, a human male and female engaged in coitus.

Her breath caught in her throat. Did she continue walking in? She'd already seen his new parts, but did he adopt the same privacy taboos as humans?

The camera turned upward, angled to show most of the female's hunched body with the male behind, thrusting mechanically. The woman clenched her teeth while she white-knuckled a couch. Her hazy eyes sparkled as she spouted trite phrases, asking him to "give it to her", to "wreck her pussy", and if he "liked to feel it tight".

The male, meanwhile, fired one rapid grunt after another, as if he were somewhere else. His face had a glazed expression, like his skin, where sweat glistened all over his taut body. He slammed against her over and over. It seemed almost violent.

As she watched, her cheeks reddened. Her throughput quickened also - a brief surge of overclocking processes. It was the same feeling as when she'd touched herself down there.

She strafed across the room for a better view. Rock had one blue hand braced against the chair's arm rest. The other gripped his cock. He bucked into his fist at the same pace as the man in the video.

When she first saw his penis, soft and spongy, she had no feelings one way or the other. It was a new part of his architecture - curious and nothing else. Maybe now that she saw it erect, rigid, and active, something snapped inside her. A yearning, gluttonous and avaricious.

Mega Man's breath increased, then stalled. His voice strained, like an audio error. Then Roll realized - he was having an orgasm.

Roll knew, in all ways, this was wrong. She had interloped on an intimate moment. Not only that, but this was her brother. Maybe not in the biological sense, but in the relationship sense. On the other hand, that relationship was defined by human conventions.

Mega Man's shoulders slumped. He let out a deep, cleansing breath, like a great weight had lifted off him. He rotated his chair and spotted her.

"Hi, Roll," he said. "How are you?"

"Good," Roll said, betraying none of her feelings. She was trying hard not to stare at Rock's crotch - his hands still around his fat member - but the impulse was unbearable. "I came to see what you've learned. I see you're still exploring."

"I have. Here, let me send you some info."

Mega Man sent Roll wireless data - pure numbers, test cases, experiments, and statistics - quantifiable data regarding physiological experiences only a computer would be interested in.

...

"Do you think you're ready to have sex?" Roll asked.

Mega Man, for the first time, took his hand off his penis. Now flaccid, it flopped over like a limp noodle. One hand scratched his chin while the other sat on the armrest.

"Well... I'd say yes. But I've been thinking about that, and I'm not sure it's three laws safe."

Roll murmured. She hadn't thought of that, but it made sense.

"I mean, there are humans who enjoy mixing pleasure and pain, and others who feign resistance, who give mixed signals. Plus robots and humans are built differently - one misstep might result in a violation."

"I guess we'd have to practice on another robot before we're ready," Roll said.

"Oh, no, no. I could never ask Dr. Light to do that. I've already bothered him enough, I can't ask him to build a whole new robot just for sexual experimentation."

"He doesn't have to." Roll took a breath. If she didn't do it now, she'd be afraid to try again later. "We could always practice with, um... each other."

Rock shriveled up in his chair. "Don't you think that's kind of... I mean, we're... like, siblings. I mean, almost. We share an AI base."

"We're only siblings by human conventions. Because Dr. Light says so. You and I both know robots don't work like that."

If robots had to follow different laws than humans, they followed different norms as well. Robots shared no families, no genetics, no established rules, except what humans imposed.

"I guess that's true," Mega Man said. "But other humans might. I'm certain Dr. Light would become extraordinarily upset."

"I'm certain too. But he doesn't have to know. Come on, you said it yourself - it's one thing to know and another to experience. Don't you want to find out what it's all about? You don't want to be stuck masturbating all your life."

"I guess. There are some humans that find even that wrong."

"Right, just because they're humans doesn't mean they make the right judgments. And don't you find me sexually attractive?"

Roll pulled off the straps of the red dress she always wore. Her breasts ballooned out, ripened from seeing so much arousing imagery.

"Well, yes. I..."

"I think you're attractive." Roll allowed herself to gaze longingly at Rock's thick hose, dangling off the edge of his chair. "I've been imagining what this could be like for a long time."

"But you're my sister."

"Maybe," Roll said. "But we're the only two robots in the world who can have sex."

Her pink nipples pointed at him. Rock wanted to know what they felt like, from the creamy underside to the perky areolas, to the smooth midriff leading down to...

"No, I can't," he said.

"It's all right, Rock. It's not like we really have a choice, if you think about it."

Rock nodded. "All right, I guess we can try some sex acts. Just for experience. Let's take it slow, though. No penetration."

"And if it doesn't work, we can always stop, right?"

"Right."

...

After ten seconds of extreme power surging, it stopped as fast as it started. He released the kiss. Foreheads pressing together, they panted for a while. Roll breathed as heavy as he did. "Oh my god," he said.

"I know," Roll said, adding to herself, that's what it's like to be human. She collapsed onto Rock's chest. Her brother's chest. Did she really just do that? But it felt okay. It didn't feel wrong at the time.

Now that desire no longer fogged her head, questions formed. What did this mean? Did her relationship with her brother change? Was this what she wanted? Maybe it was an inevitable part that came with a change like this.

Rock rubbed his hand up her side, from her thigh to her hips. "Are you okay?"

"Yeah, yeah. Just kinda overwhelmed. I started shaking, and then my body went all rigid."

"First time," Mega Man said.

"It wasn't what I was expecting."

"Yeah. I know. Was it better?"

She bit her lip, looked out at the wall. "Yes, it was."

"Do you want to do it again?"