A/N: Hello all. It's 2015 and ya know what that means, time for a 2015 crossover. It's another none Mew Mew Power crossover and it's another IS crossover, this time with MegaMan X. Take note that this will have elements from Maverick Hunter Sailor Saturn and my Maverick Hunter Zoey, so enjoy. Also, the beginning chapters will be an prologue before it kicks off into the main series which this fanfic will follow all 10 MegaMan X games and its spin-off Command Mission, so expect spoilers from this fanfic. And finally, this fanfic will feature some elements from the MegaMan X comics made by Archie. Enjoy!

Disclaimer: I do not, I repeat do not own MegaMan X, all rights go to Kenji Inafune and Capcom, nor do I own Infinite Stratos, all rights of the anime, manga and novel go to Izuru Yumizuru. I also don't own any anime I put in this fanfic. Please support the disclaimer and I hope you enjoy MegaMan X IS. Crossovers to appear for Arc 1 at the end of the chapter. Also, the book cover used in this fanfic is made by me, my first man made cover using pictures I found on the Internet, so the logos go to their respected owners and whoever modified them.

Chapter 1: Dawn of X: Five Mysterious Girls

(March 25, 21XX. Location: Tokyo Ruins)

In a highly desert themed area of the land of Japan, an expedition team was excavating the ruins of some modern but ancient buildings. They were mostly robots and humans wearing explorer clothes, they were digging through with advanced equipment. An elderly man with a long white beard who wore the typical explorer clothes was discussing the structure of the ruins they have uncovered. His name is Dr. Archimedes R. Cain, a famous scientist on robotics and part time explorer of Neo Tokyo, a city that is a much advanced version of Tokyo. He and his fellow explorers, both human and machine were discussing a strange energy reading they detected a few days.

"If my calculations are correct, the source of the energy reading should be… here." Dr. Cain theorized as he pointed at a map of the ruins of Tokyo.

"Interesting, Dr. Cain." A female researcher nodded. "Who knows what we can find in these ruins of Old Tokyo."

"But didn't you know about the tragedy that took place in Old Tokyo back in 2035?" A blue robot asked out of question. "They say ISes, weapons used by girls nearly caused an epidemic that almost wiped out all of Japan. Since then, governments of the world have banned ISes and the one who created them, Tabane Shinonono became so hated, that she hide from society. Since then, no one knows what really happened to her. And then, powers of the world was returned to men, but women were given a seat beside them to make amends for the tragedy that took place in Old Tokyo." He gave the group a lesson on world history.

"Yes. Let us hope the same tragedy never happen ever again." Dr. Cain nodded in agreement. Just then, an explorer came in with excitement over his features.

"Dr. Cain! We found it! The source of the strange reading came came from an old lab we have discovered!" She exclaimed.

Dr. Cain smiled slightly as he stood up from his seat. "Well then, lead me to it."

(2 minutes later…)

"Charge set! Ready to detonate!" The man pressed the trigger and the old doors were blasted opened, Dr. Cain came into the room with some helper robots and observed the room. It looked like a lab of some sort with some really outdated computers and a huge mysterious capsule in the middle of the room.

"Hmm…" Dr. Cain carefully surveyed his surroundings and spotted a huge blue L on the wall. With careful inspection and deducing on what the initial means, he gasped in shock and excitement.

"Dr. Cain, what is it?" The explorer assistant to him asked in concern.

"This is… It really is!" Dr. Cain chortled happily. "This… is none other than the lab of the famed scientist, Dr. Thomas Light! I never knew we find it here!"

"The Thomas Light?!" A robot asked in surprise. "The same man who created the legendary heroic robot, MegaMan?!"

"The same!" Dr. Cain nodded with a grin. "But…" His expression showed a serious one. "I wonder what Dr. Light left here after his death?" He noticed the capsule in the room. He walked up to the capsule and wiped the dust off. It showed a yellow X in the middle. "…X?" He got near the top of the capsule and wiped the dust off, it showed a glass window of an 18 year old looking man who wore blue armor and a helmet with a red gem embedded on it, sleeping. "It's a robot…"

"Dr. Cain. We managed to get one of the computers working again. Take a look." A female explorer informed him as Dr. Cain walked up to the computer screen and it showed him a message from Dr. Light. After carefully reading through the message which also showed blueprints for the robot Dr. Light created that Dr. Cain saw. He confirmed that this robot's name is X and he also learned about X's ability to feel, think and choose for himself and a special power X may have and the dangers Dr. Light feared that his timeline is not ready for X so he has to seal him away.

"Dr. Cain. Dr. Light said not to open X's capsule until he is certain that this timeline is ready for X to be awaken to. Should we open the capsule?" One of Dr. Cain's helper robots asked out of concern.

"I don't see why not. Let's open the capsule then." Dr. Cain feel confident that opening X's capsule may provide wonders for his timeline to behold. He typed in the access code he have gotten from Dr. Light's message. The capsule let out a hiss as it opened. Dr. Cain and his team gasped in awe as the robot known as X slowly rose up from his sleeping position and opened his eyes. They were an emerald green color.

X looked around in confusion before turning to Dr. Cain and his team, asking "Who are you people?"

Dr. Cain smiled as he step forward. "Welcome, X. Last creation of the honorable Dr. Light. I am Dr. Archimedes R. Cain. I am the one who has awoken you from your deep slumber."

"Dr. Light?" X blinked before he realized something. "Of course. Dr. Light said I am not ready for his timeline so I have to be asleep for a long time after his death. What year is it if you don't mind me asking?"

"Why this is the year 21XX. You my friend, are a living relic." Dr. Cain explained to him. "I'm afraid Dr. Light has long since passed away. It's a miracle that I found the last creation he has created. Come, I'm sure you have lots of questions that need to be answered. Perhaps we should take your capsule with us so we can study more about it." He suggested.

"Of course." X nodded as he stepped out of his capsule and picked it up with amazing strength as he followed Dr. Cain and his team outside.

(Dr. Cain's POV)

"Dr. Light was a genius! His last creation, X has the ability to think, feel and choose for himself!" Scene shows X painting a Mona Lisa copy which amazed Dr. Cain and his team who applauded his success.

"Still, X feels uneasy about being in this timeline after being in a long sleep. But I'm confident that he will make the right choices. I decided to copy his design and created a robot that has the same functions as X." Next scene shows Dr. Cain, X and some scientists building together a robot who has the same features as X. When Dr. Cain pressed the button, the robot sprung to life, looking around the room in confusion while Dr. Cain cheered and some of his team high fived each other.

"I dubbed the robot, Reploid, the next generation of robots. A few days later, X and I observed my creation's actions and was pleased by the results. Heck, me and my first Reploid even got into our first argument. Hehe." Next scene shows Dr. Cain and his first Reploid arguing while X sighed and shakes his head.

"I was so proud of my success that I presented X and my first Reploid to the United Nations in the United States of America, and they were amazed and pleased by the presentations X and the Reploid have shown. The leaders of the world approved my recommendation of mass producing Reploids." Next scene shows Dr. Cain shaking hands with one of the world leaders while X and the first Reploid smiled at Dr. Cain's success.

"About 50 percent of Reploids were mass produced. Soon to be 65 percent." Another shows Reploids of different shapes and sizes being mass produced in a factory.

"And Reploids became such a hit, they're even popular with the children." Scenes show Reploids working together alongside humanity and some playing with children.

"And then, one year later…"

X was in Dr. Cain's office, nervous about what Dr. Cain, the father of Reploids has to say. "You wanted to see me, Dr. Cain?"

"Yes. Recently, my team discovered five unknown energy signatures far from Old Shibuya." Dr. Cain stated as he looked out the window in his office. Dr. Cain was wearing blue scientist clothes. "Technically, I would love to go to the ruins, but I have been called by the Ambassador of Neo Hong Kong to discuss Reploid production. So I want you and a team of explorers to investigate them in my place."

"Understood." X nodded, but not before hesitating. "Dr. Cain… I have been wondering after Dr. Light created me… What will my purpose be in the year 21XX? Will I make the right decisions?" X looked down despondently.

"Well, don't worry about it too much, X. I'm sure you'll find your purpose soon enough." Dr. Cain chuckled softly. "Besides, I doubt Dr. Light would make you into a killing machine."

"You're right." X smiled softly. "Well, I'm going to Old Shibuya with your team, Dr. Cain. Wish me luck." X bowed politely as he left.

Dr. Cain continued to look out the window. "X… I hope you find your true purpose soon. I believe in you, just like Dr. Light has." He smiled softly to himself.

(Old Shibuya, January 26, 21XX, 2:00 PM)

X and Dr. Cain's team were standing in front of what looked like a old ruined school with some strange structure. He turned to one of the assistant and asked "This is where the unknown energy readings are?"

Dr. Cain's female assistant nodded and began explaining "This is where he said it would be. Strange, to think the readings would be in the old IS Academy in Old Shibuya…" She scratched her chin in thought and closed her eyes in introspection.

"IS Academy?" X was clearly confused on the word IS.

"IS stands for Infinite Stratos, back in 2035 before Dr. Light became famous in 20XX, ISes were used by women and since then, leadership shifted control to women, but ISes were too dangerous to use, so there were rules placed on ISes and the IS Academy was built to carefully handle ISes."

"But…" X looked at the ruins with concern. "What happened to this place and why haven't I seen an IS before in any museum or something?"

"That's because an incident occurred when a terrorist organization called Phantom Task tried to release a deadly virus to wipe out almost all of Japan, but ISes were deployed to stop them, but in the end, they accidently caused the virus to leak, killing about 10 percent of people, including the Phantom Task organization. I heard a rumor that five people survived the virus when the government destroyed the virus with a vaccine, but no one has seen the survivors of the virus. People started to blame ISes because they almost destroyed Japan with the virus and other people worldwide feared the power of the ISes." The female assistant stated as she looked at the ruins.

"My lord, so ISes were banned?" X was wide eyed upon hearing this.

"Indeed. And power returned to men, but women were given a seat beside them to help mend the wounds in Japan. But enough world history, let's find those energy readings, shall we, X?" The female assistant smiled softly.

"Y-Yeah…" X nodded slowly. 'A worst event in history… I wish I could see an IS in person…' X and his team entered the ruined IS Academy.

A light droid was deployed to provide lighting for the building. X and his team of humans and Reploids explored the ruins of the old IS Academy. To X, it was an amazement of old classrooms and an old ruined arena for ISes. X observed the surroundings with awe. Just then, a Reploid ran up to him.

"X! We found the source of the unknown readings! They're in some old lab, but we can't get the door to open." He told him.

"Roger. I'll be there right now." X nodded before taking a last look at the IS Arena before following the Reploid to where he and his team found the readings.

X and his team stand before a old about to break down steel door. He turned to a male researcher. "This is where the readings are?" The male researcher nodded in response. X nodded back as he raised his arm and it transformed into a blue arm cannon and it began to charge up with blue energy, with a yell, he fired at the door, destroying it in the process. He signaled his team to follow him inside.

Inside was an old lab with five capsules in the middle and some sort of beacon. "What is this place…?" One of the Reploids muttered in amazement. X noticed the capsules. Curious, he walked up to one of them, the middle one to be exact and discovered it is some sort of cryogenic pod. He read an article about scientists freezing people with these pods so one day in the future, mankind can provide better medicine or a way to bring back old people or young people about to die back to life with advanced technology in medicine. He wiped the glass window and saw something that shocked him.

It was a 16 year old girl with black back length hair tied in by a green ribbon, naked and sleeping. Curious on who this girl is, X bended down and saw a small computer screen displaying the name of the occupant.

"…Houki Shinonono…" X whispered. 'Wait… Shinonono? Could she be related to the disgraced IS creator, Tabane Shinonono?' X decided to inspect more of the capsules and found four more girls sleeping in suspended animation. Their names were Cecilia Alcott, Hung Lingyin, Charlotte Dunois and Laura Bodewig.

The female assistant of Dr. Cain inspected the beacon on the floor and touched the button to activate it. It emitted a hologram of a mature 21 year old woman with black hair and wearing modern clothes, but she seems to be sick or something.

"X, take a look at this." She urged X to watch the hologram.

"This is a final prerecording message by Chifuyu Orimura…. "She coughed heavily. "My sister and the entire Phantom Task organization was killed by the virus they have created, and about 250 people are dead due to the leak and the death count is piling up. I and some of the staff of IS Academy caught the virus and are slowly dying. Somehow, my five best students are immune to the virus due to their type S blood, but they entered into a deep coma that our current medical technology cannot cure. So, the only option is to put them into suspended animation and hope for a cure in the future…" Chifuyu coughed again. "Ichika… if you're alive and got this recording, please find Houki, Cecilia, Ling, Charlotte and Laura… Good bye, my little brother…" Chifuyu slumped to the ground, seemingly passed out, but X could tell that Chifuyu has died. The hologram ended.

The team were silent upon hearing the recording while X looked at the five capsules with a serious expression.

"X… what should we do?" One Reploid asked with worry.

"…We take the five capsules with us and revive the five girls from their century long sleep." He told him.

"But X…" Dr. Cain's female assistant voiced her concerns about this. "If these girls wake up from cryosleep, they will be confused in this timeline they're in. They'll panicked over it."

"Don't worry…" X smiled slightly at her. "I'll be happy to help them enjoy their new life in 21XX."

Marvel Disk Wars: The Avengers opening plays

Musashi the Master presents…

A fanfic based on the MegaMan X series by Capcom.

MegaMan X IS, a MegaMan X x Infinite Stratos crossover

Based on the MegaMan X games and its Archie comic

Crossovers in Arc 1: Rise of Sigma:

Amagi Brilliant Park

Mission starts next chapter. See you soon…

Next chapter: IS Girls and Reploids: Getting to Know X

A/n: So how is it? Hopefully, this is a much better version than my MMX x Mew Mew Power crossover. Anyway, next chapter, the IS girls and X meet and how will the five IS girls react in the year 21XX? Find out next time on the next chapter.