Notes: Okay, a new RockmanEXE/MegamanEXE story. This one involves time travel, specifically people from the future coming to the present. It's really a 'what if' which wouldn't leave me alone. Some knowledge of the anime would be best to have in order to follow some of the events since crossfusion is a thing in this story. But, I'm also okay with answering any questions if there's anything you don't understand so give it a read regardless.

Chapter 1

Netto was hovering on the edge of consciousness. It was nice and he could lie here all day.

"Netto! You have mail!" Rockman's voice broke into his warm haze, forcing him up in an unpleasant way.

Netto yawned and rolled over.

"Wake up!" Rockman insisted.

Netto cracked one eye open, automatically seeking out the blue PET. It was in front of his computer, placed in its charger. On the screen was the familiar blue navi, frowning with his arms crossed.

"Who's the email from?" he asked.

"Enzan."

Netto got up and grabbed the PET. It was rare that Enzan contacted him personally.

"What's it say?" he asked.

"There's going to be a meeting today. Chief Kifune wants to talk to you and him. Apparently something's happened to Laika."

"Is Laika okay?" Netto demanded to know, thinking of the serious solider from Sharo who always did his best. For something to happen to him; Netto couldn't shake the feeling that something big was about to go down.

"I don't know. Either way, the meeting isn't until after school so, you might as well get ready."

Netto sighed at the happy smile on Rockman's face. "Fine," he huffed. Of course Rockman was happy, he wasn't the one who had to sit and listen to Mariko sensei all day.

"I'm sure Laika's fine," Rockman said as Netto got dressed.

Laika was injured but fine. His arm sported burns which still persisted even after ending his cross fusion. He was able to talk to them via a video conference connected by his navi Searchman.

Netto was pleased to see Laika was healing in a hospital-like room. He was even more pleased to see his father again. Dr Hikari had been working in Sharo, getting their dimensional generators up and running. The generators would allow data, like navis, to appear outside of computers and help in the physical world.

"Hi, Papa!" Netto said, the sentiment echoed by Rockman on the computer.

"Rockman, Netto, how are you?" Dr Hikari asked.

"We're fine."

"Netto still has problems waking up in the morning."

"Rockman!" Netto frowned at both his navi and Meijin, his father's assistant, who was sitting at the computers on their side and monitoring everything. Meijin had chuckled.

"No strange navis have attacked you?" Dr Hikari asked.

"No," Netto and Rockman answered in unison. In fact, it had been a quiet week.

"Laika was attacked by a female navi who somehow managed to appear during on the dimensional area tests," Enzan explained. "And I haven't seen her before."

"A new navi?" Rockman questioned.

"Who was she?"

"She didn't say much," Laika informed them. "But she looked a little like a butterfly. If butterflies were human-sized had wings made of fire data."

"That explains the burns on your arms," Netto stated. "So, you think she'll appear here?"

"We thought it best to warn you," Dr Hikari said. "At least until there's more information."

"She doesn't seem sane."

"When do our enemies?" Enzan muttered in response to Laika's comment.

"She mentioned that she wanted to see me burn," Laika said.

Netto was a little worried by that. "Do you think she's after you?" If she was, he would fly out there on the next flight. There was no way he was leaving Laika to face her alone.

"She didn't use Laika's name. It seemed like she just wanted to burn him for being fused with his navi," Dr Hikari said.

"We'll monitor the situation for now," Chief Kifune said in a tone which marked it as an order.

Netto was quiet as he made his way home. Noticing the unusual behaviour, Rockman commented;

"Are you worried about this new navi?"

"I've never heard of a navi like a butterfly," Netto commented, dancing around the question. "I wonder what she's like."

Rockman had a feeling Netto was worried but knew that they couldn't do anything right now. He decided to indulge his operator's train of thought.

"I wonder where she came from?"

"Maybe she was programmed for battle?" Netto said. "Although it seems strange that we wouldn't have heard of a battling butterfly."

That tone said that Netto was thinking about fighting her. Rockman was a little worried about that. While he would love to test his own skills against a battling butterfly, he didn't want Netto hurt like Laika was. Maybe this train of thought wasn't a good thing after all.

"Did you finish your homework before the meeting?" he asked, despite already knowing the answer.

"Rockman," Netto groaned. "Of course I didn't. I was too busy."

"Maybe you should do it when we get home."

"Fine. Maybe we'll get called in before I can start," Netto dreamed.

Netto received a call from Meijin the very next day. Some viruses had managed to materialise in a city street, somehow. While the street had been evacuated, they needed someone to go in and delete them.

"How can they appear without a dimensional area?" Netto questioned. He could see them walking around the street, hitting cars and poles. They were most certainly viruses, a bunch of different ones waddling around.

A moment later, the atmosphere became charged as a dome appeared over the area. Netto pulled out his synchro chip and slot it in. A moment later, he was fused with his navi, a blue jumpsuit, backpack and helmet adorning his body.

/Ready?/ Rockman asked in his thoughts.

/Let's do this!/

Netto made quick work of the viruses using Rockman's buster. However, when the last round, yellow and electrical Birī was deleted, the area heated up like the sun was directly above them.

"What?" Netto questioned as a large data figure came into the area. Square data flew around and joined the larger figure as she appeared in the air above him. She certainly looked like a butterfly, the yellow body long and yellow. Orange antenna sprouted from her head and her wings were made of fire spurting from her back in red and blue.

"This is bad!" Netto said out loud.

/She's the one who attacked Laika!/ Rockman said, the data he had received positively identifying her.

"What are you doing here?" Netto demanded to know.

The floating figure examined him like he was a bug under a microscope.

"Another one?" she questioned. If she had a mouth on her smooth lower face, it would have been grinning. "Kahahahaha! Show me what you've got!"

/I guess we have no choice,/ Rockman mused.

"We will win!" both navi and human said in unison. They clenched their hands and glared up at the fiery bug.

Although the navi didn't possess a mouth, she tilted her head up and reached out a hand. She almost seemed to be smiling as data condensed there.

The fusion of Rockman and Netto jumped back and readied a canon chip. One, two, three! They fired. The blast missed as the navi twirled and fire spilled from her hands into a hoop in the air around her.

She laughed. They readied water chips.

"Aqua tower!" they called, slamming their hand on the ground. Water rushed out, heading right towards the navi. It broke the ring, caused her to scream and she threw what was left of the ring at them.

They jumped out of the way but flames splattered out of the impact point and hit their foot.

/Ouch!/ Netto winced and grabbed the injury.

/Netto! Look out!/ Rockman said as the angry fire butterfly hovered above them. Her face was covered in shadow the bulbs at the sides of her head no longer bobbing in the air.

Netto couldn't move fast enough. She was ready to blast him.

"Can't... give up," he said, hopping to the side. The blast hit the ground, spraying out as before.

/Is it getting hot here?/ Rockman asked. The temperature was rising.

Netto was panting now, face hot and body sore. He couldn't pull himself to his feet.

"You've been fighting her too long!" a voice called out.

Both crossfussed human and fiery navi looked over at the speaker. A man in a blue hat and jacket stood in the middle of the street behind her, face obscured by a pair of sunglasses.

He pulled his hand out of his pocket and held up a device shaped like a remote control.

"I'm sorry about this, but you're hurting him," he said before pressing the button.

"W-what? Why...can't I... move?" The navi screamed, body vibrating as data particles shook loose into the air around them. After a few moments, she burst into data particles, logging out.

The air instantly felt cooler. Netto breathed a sigh of relief as the wind hit his face. The dimensional area dissipated and he caught his PET as the crossfussion canceled, separating human and device.

Netto looked at the stranger. "How does that work?"

The stranger looked at the device and then placed it in his pocket. "It bombarded her with the very thing she was using to materialise. She became unstable and had to log out or be deleted, bit by bit."

As Netto walked closer, they pulled the brim of their cap over their eyes and smiled. "Next time, you need to finish the fight quickly or get out of her range. Otherwise, you'll overheat. Ja ne!" They waved and bolted off down the street.