Disclaimer: Obviously I do not own Code Geass or Twenty Thousand Leagues Under the sea along with other related appearances of other materials that appear. Otherwise I wouldn't be writing fanfiction lol.

A/N: Anyway in conjunction with one of my other fics I was considering a 20,000 Leagues under the Sea by Jules Verne crossover with Code Geass, after the other one hasn't been performing as well as I had hoped. Originally I had planned on Lelouch meeting Captain Nemo in a modern era setting, but after going over possible ideas and such I ultimately decided that the story would be better set in the past era with some radical changes so this story is more AU than anything else and some characters will be (hopefully only slightly) OC in light of the era when the story takes place and such. Also it allows me to do a little more and do something different. The summary spoke enough of what I got in mind so without further delay here is the story. The beginning might be a little rough, but once we get pass half of this chapter it should flow a lot more smoothly.

Let the story begin.

Chapter 1

Alarming Rumors

In the year 1866 A.T.B. the shipping world was alarmed by rumors of an avenging sea monster on the loose. A series of strange, but unfortunate, events befell certain vessels cursing the great oceans of the world. However with the growing rise in incidents travel along these shipping lanes diminished down to a few bold ships. Captains, Sailors right down to the common man had different ideas and stories about the exact nature of this monster, but what was constant however was that the avenging sea monster attacked primarily for the most part Britannian ships.

Specifically warships and some cargo ship belonging to the Holy Britannian Empire, which at least until the appearance of this sea monster was growing into one of the world's mightiest superpowers as it was seeking to expand its influence well beyond its own border and attempt to seize more land across the Pacific and the Atlantic. For the past two years according to most rumors when the monster first appeared somewhere in the Southern Area of the Pacific Ocean attacking Britannian ship attempting to move troops to the small island country of Japan where the Empire was attempting to seize the country for its deposits of Sakuradite to use for military purposes.

Even their battleships meant an unfortunate end before the monster leaving many in the world to credit the beast with thwarting Britannia's efforts in conquering Japan. With the constant reinforcement in both supplies and troops and their battleships being sunk the Japanese military repelled the Britannian Invaders after a long fourteen month campaign of open war.

Not even a fleet made up of eight warships from the Empire was not enough to scare the beast let alone stop it as it sunk the entire fleet much to the horror of the military leaders within the empire, but elsewhere in the world the monster was viewed very differently this was especially so with the Japanese. It was because they were able to keep their independence as a country thanks to the monster giving Japan the chance to repel the invaders despite having been outnumbered and outgunned.

But this sea monster didn't just attack Britannian ships exclusively as rumors also spread of pirate ships, slave trading vessels and ship moving illegal goods such as drugs or munitions had also met an end at sea. It seemed that this monster didn't just attack Britannia, but it went after anything of evil intent on the seas giving rise to its title as an avenging sea monster that seemingly tackled injustice at sea.

Naturally of story like this mystified many people around the world even those living far from the ocean itself had nevertheless heard the tales. Everything from the average man to those sitting in seats of power, naval officers of all countries including their respective governments were deeply interested in the matter. Yet in places of great resorts and towns built along the sea the monster was the fashion in a sense as people sang of it in pubs, ridiculed in papers, and represented it on stage. All kinds of stories were circulating about the monster; some countries were comparing it to famous fictional sea monsters of myth and legend such as the Kraken and Moby Dick.

As the year 1867 A.T.B. came around one noteworthy incident happened on the 13th of April three hundred miles off the coast of Ireland a passenger cruise liner named the Scotia had an incident a little pass four o'clock in the afternoon just as the passengers were gathering in the grand salon. The shock was slight, but no one might have noticed it until a panicked crewman had hurried up to the bridge informing the captain of the vessel that they were sinking.

Fortunately the boilers that provided power to the ship's paddles had not been affected and thanks to the quick acting of her crew the water entering through the hole in her hull was isolated to the fifth compartment of the ship's seven compartments, but the danger of the ship going down remained although it was not immediate. After three days delay of uneasy waiting the ship made it to port at Cape Clear safely.

Once the vessel was in dry dock engineers examined the damage and they discovered a regular dent-like puncture that was two yards in diameter found two yards and a half below the water mark. The shape of the puncture and the strength needed to penetrate three-eighth inch thick plates of iron was not only unbelievable, but it demonstrated that whatever had left this hole had enormous strength going behind it. Despite the different tales this actual piece of physical evidence DID confirm that something was out there that was capable of piercing iron-clad vessels with monstrous force behind it.

Taking into account observations of the confirmed sightings of the beast seen around the world and the timeline in which they happened, governments and researchers realized to their amazement and horror that this sea monster was capable of crossing great distances traveling at velocities exceeding that of most seafaring vessels and obviously existing sea creatures. Its size collected from observations being at least over two hundred feet long surpassing that of any known whale, but also something to note it held a type of florescent glow.

Regardless of the stories now, there was something out there sinking ships. Since Britannia was obviously the monster's target the mighty nation in responses to more confirmed reports organized hunts to find the monster and destroy it. One of these hunts was headed by third prince of the Empire Clovis la Britannia who acquired a Sutherland-class steamship heavily armed with forty heavy power guns as well as equipped with whaler hunting tools and equipment from axes to harpoons.

His hunt began on May 5th 1867 A.T.B leading up to the night of May 26th in the middle of the South Pacific four hundred miles off the coast of the Hawaiian Islands. On the bridge of the mighty battleship the Great Britannia the 28-year-old prince was becoming a little impatient as they began searching areas where the monster had sunk a Britannian ship, but so far no sign of the beast.

"Ships that have sought to avoid the monster found it and were sunk by it, but now we can't find it," Clovis mused while he sat in a chair on the bridge while the crew, made up of the finest seamen and whalers he could get his hands on were alert and ready.

"I am sorry your highness, but we aren't a full month into our search yet. Perhaps you should get some sleep your highness and we'll alert you if we see anything." The captain of the Great Britannia commented while secretly he was glad they hadn't found the monster.

Despite the watchfulness of the crew the problem was that the ship itself relaying on steam-powered rudders on its sides for propulsion and its heavy plated and mass made it slow to turn. Off in the distance a glowing light in the form of two bright eyes just above the surface of the water could be seen quickly approaching the ship's port side at increasing speed.

As it picked up speed the monster slipped under the water hurrying to the ship with a glow under the water seen. The crew hurried as whalers readied harpoons and the crew readied their cannons, but it was too late. The monster got the drop on them and it was already going for the kill and the ship couldn't move out of its path fast enough.

The monster impacted the port side with earth shattering force as it tore through its thick iron plated hull going clean through the warship and emerging from the other side unharmed speeding away from the doomed ship. Fire from erupted boilers began spreading through the ship while at the same time sea water was rushing into the ship through its open wounds.

The crew had barely time to react as some had already began to abandon ship leaping into the sea, but seconds later the same fire that had been unleashed on the upper deck away from the water found the munitions and the gunpowder the ship had been heavily stockpiled with igniting it setting off a fearsome explosion that seemingly blew the ship in half.

The Great Britannia now reduced to two flaming halves quickly disappeared below the waves taking Clovis la Britannia with it.

(One Week Later)

"I say there is no monster, but we need men. But just to treat you fair and square we're offering double wages with a bonus from Frisco to Shanghai and back all found."

"All dead you mean?" A voice interrupted as a young man in his forties with a mustache climbed on top of a wagon to begin speaking to a gathered crowd of sailors looking for work. "Don't listen to him mates, you'll never make it back to Frisco to collect your pay. Have any of you heard the news? The monster isn't just a ship killer!"

The man tossed down a stack of fresh newspapers where on the front page was a picture of Clovis la Britannia and a headline reading.

Sea Monster Claims Prince

"It's a royal family killer…"

Among the crowd of sailors sat one at an outdoor café just across the street from the gathering. The young man was twenty years old with short brown hair and green eyes. Unlike the Britannians around him the young man was Japanese who was seemingly out of place, but his presence in Japan wasn't his choice as he listened to the collected crowd of sailors chattering among themselves. His attire was simple, a white shirt with a black jacket, blue pants and black shoes wearing a blue sailor's cap.

Suzaku Kururugi sat at his table quietly listening to the chatter. Having read the paper earlier he knew of Prince Clovis's demise, but yet the killing of a member of the Royal Family made him wonder if this whole monster affair was finally an act of divine punishment upon Britannia as a member of the royal family he knew seven years ago, but three years ago he vanished without a trace.

(April 10th 1860, Poseidon Villa on the shore of the Lost Coast north of the San Francisco)

A fifteen year old Suzaku Kururugi was brought to the large double doors of a large sea-side manor overlooking the ocean with a well fortified and heavily guarded mansion owned and controlled by one of the most reclusive of Britannia's royal family members. The door opened and inside stood a tall man in his late twenties with gel-back blue hair and orange eyes with a tanned complexion.

"You must be the boy from the Kururugi Family?"

"Yes sir I am," The boy replied while the taller man glared at him.

"Very well you may come in, but I must ask that we reform a search of you."

"Huh?"

"The master insists that ALL guests including those staying especially are searched...very thoroughly."

Suzaku couldn't help but gulp at that last remark.

Five minutes later after a nerve-racking and a rather embarrassing strip search the young man was back in his clothes again as the man led Suzaku towards the study on the first floor where shelves filled with books and there was a large round table in the middle with a pair of chairs and an ornate golden oil lamp.

"Wait here," The blue haired man said sternly before leaving Suzaku alone to enter a room opposite of the entrance they used.

It was a thick heavy metal door which the man in the white suit had to move to the side to enter the room beyond. The door locked behind him as a heavy click rang throughout the room leaving Suzaku to browse around the room. Looking upon the books on the shelves Suzaku eyed that most if not all the books he was seeing was mostly on scientific subjects ranging from Oceanography, Biology, Chemistry, Geology, Meteorology, and Physics as well as Geography. There were books on other subjects Suzaku wasn't sure about, but he did see more books related to marine science including a pair of books entitled Mysteries of the Great Submarine Grounds Volume I by Pierre Aronnax with Volume II sitting next to it.

"Somehow you don't have the look of a scientist." A voice behind him spoke causing Suzaku to turn around suddenly.

The blue haired man stood glaring at Suzaku, but next to him was a surprisingly younger person with silky black hair, a pale skin complexion and amethyst eyes wearing a white shirt with a cravat, a purple vest and black pants. But the young man was the same age of Suzaku which left the Japanese person stunned.

"Are you just going to stare at me or are you going to introduce yourself?"

"Oh…I am Suzaku Kururugi, son of Prime Minister Genbu Kururugi of Japan your highness."

"I see so you are the boy they told me who was coming. I hate having guests, but taking you in was the only way to secure funds for my research and to keep up my privacy." The black-haired young man complained. "I am Lelouch vi Britannia the Seventeenth Prince to the throne and this man you have met is Sir Jeremiah Gottwald my knight and the man I trust most."

"It's a pleasure and an honor to meet both of you," Suzaku said with some hesitation in his voice, but it was something Lelouch noticed through.

"You seem to have something on your mind Mr. Kururugi; would you care to share it?"

"Your security measures seem extreme even very different from the other villas I saw at the capital when my father and I visited the palace."

"Yes I suppose they would be, but experience taught me that you cannot be too careful. Especially with being a member of the royal family," Lelouch said as those last words carried a clearly strong hint of contempt before continuing. "I learned that lesson very harshly five years ago, but enough about that I will ask Jeremiah to show you to your room."

"Leave it to me your majesty."

That was the first time Suzaku met the man known as Lelouch, the most reclusive of the Britannian Royal Family.

Suzaku finished his drink as he remembered the slight difficulties the two boys had as Suzaku had been forced to stay at the Poseidon Villa at both the request of his father and that of some members of the Britannia Royal Family, but what became clear was that like him the black haired prince held a hidden hatred of the Britannian Royal Family. It was six months later that Suzaku had learned what the source of that hate was after his own dislike for Britannia was made known after Suzaku's attempt to conceal it was noticed by Lelouch.

In fact Lelouch had suspected he disliked Britannia given that his country Japan and Britannia were currently experiencing deteriorating political ties which prompted the visit by the Prime Minister of Japan by order of the Emperor Taizo Kirihara to repair relations with the superpower. In fact it wasn't hard for Lelouch to notice it since given that Japan and Britannia were experiencing growing tensions it shouldn't be a surprise to anyone that the Japanese people wouldn't be holding Britannia in contempt.

Lelouch revealed that his own mother, Empress Marianne vi Britannia, who was one of the Emperor's consorts out of a hundred and ten was killed along with his younger sister Nunnally vi Britannia when assassins broke into the Aeries Villa where they lived originally near the royal palace. The assassins got passed the guards and killed them before making an escape. The break in itself was impossible unless someone helped them, Lelouch attempted to discuss the matter with his father the Emperor, Charles zi Britannia, but he coldly brushed the matter aside.

But the incident shattered Lelouch's entire world which ultimately resulted in him moving to a remote location on the coast of California and immersing himself in scientific research he privately carried out on his sea-side villa. But then three years ago the mansion was destroyed by a terrible explosion that left little of the mansion to search through and following Lelouch vi Britannia's disappearance it was assumed the prince had died.

Suzaku himself had been sent into town by Lelouch with very large and considerable amount of gold and money, but thinking about it now could it had been possible that Lelouch was somehow planning that explosion or knew something was going to happen. Either way Suzaku hadn't seen or heard of any sign of Lelouch being alive for the past three years.

His father was killed a year after his arrival in Britannia, presumably in an accident, but Lelouch suspected otherwise when he told Suzaku what had happened. Lelouch allowed Suzaku to remain in the villa as it became the only sanctuary for him to live in until the explosion three years ago. Thanks to the money Lelouch had given him the Japanese boy had survived living on his own for three years and was doing as well as one could expect. He currently made a living as a harpooner traveling with whaling vessels making a decent living, but he was considering traveling back to Japan.

Suzaku looked upon the crowd for one last time before paying for his meal and departing.

The gathered and currently out of work sailors were alarmed that a member of the royal family had been killed by the Bane of Britannia, but whatever hope the businessman had in trying to hire sailors was out the window. In fact in San Francisco, one of Britannia's major harbors was now at a standstill as crews were deserting their ships causing shipping to come to a grinding halt. Soon a similar effect would be seen on the east coast of the American continuant. As a result businesses that were dependant on shipping were losing money which also caused Britannia's economy to suffer. It was always building, but now the damage the monster was causing was becoming more apparent.

It also signified that something HAD to be done about it.

As Suzaku was walking down the street a man in a black business suit with egg-shaped glasses and long black hair tied into a ponytail was approaching the Japanese boy from behind.

"Excuse me, are you Suzaku Kururugi?"

"Yes I am."

"I am Sir Gilbert G.P. Guilford in service of Princess Cornelia li Britannia."

Two weeks later following Clovis la Britannia's state funeral as he was hailed for a hero for attempting to slay the sea monster terrorizing Britannia ships the military and government leaders of the powerful nation gathered together at the capital. Among them was Prime Minister of the Empire, Schneizel el Britannia, Second Prince of the Empire and his older brother Odysseus and then Commander General of the Military Cornelia li Britannia, Second Princess of the Empire.

"This is unacceptable business are suffering the people are terrified of the open sea now," One man shouted while another jumped in.

"Sailors have deserted their ships refusing to go out to sea."

"Then the decision is clear we must hunt down this monster and destroy it," A female voice spoke as all heads turned to a woman who was thirties year in age, but her beauty was truly astonishing to behold as she had shoulder length dark pink hair and indigo eyes wearing a wine red uniform trimmed with gold and white boots and matching gloves upon her hands.

She was Princess Cornelia li Britannia, Second Princess of the Britannian Empire.

"But his highness Prince Clovis attempted to hunt the monster and look what happened."

"That was a result of ill preparation and using a ship more meant to sink large ships…not a sea monster." Cornelia shot back.

It wasn't that she thought low of Clovis himself as a person, but rather through she couldn't ignore the poor preparation and chose of a ship. Given the speeds at which this monster could travel it was foolish to choose such a large vessel. A small, light and nimble vessel was more ideal for such a task. Furthermore Cornelia had no intention of rushing out to kill the beast, she would not only assemble the best whalers around for the hunt, but she would seek scientific council on what matter of beast they would be dealing with.

"I will take the new Gloucester-class ship, but besides taking crew I shall personally select I already have my knight Guilford seeking out the best whalers as well as those of the scientific community to seek advice on this so-called sea monster, so that when we set out to kill it we will be prepared for whatever the beast may be."

"Just one ship?" A new voice asked as heads turned to the head of the table where a man slightly older than Cornelia with blonde hair and nail blue eyes sat wearing a white coat trimmed with gold and black and was a step up from the gathered officials and military officers. "I admire your courage to volunteer and hunt down this beast, but why not consider taking more ships."

"These ships would need to be fast and nimble. Heavy and slow ships are just floating targets."

"I understand and I agree with you on that point." Schneizel el Britannia, Second Prince and Chancellor of the Holy Britannian Empire said.

"Once those I have consulted on the monster have a more accurate picture of what kind of beast we are facing we can looking at the possibility of more ships. However I will extend it to be voluntarily only." Cornelia added as the gathered group in the room was in agreement.

"No one opposes your idea Cornelia, but do not hesitate to ask of me for anything at all to help you in preparations."

"Thank you," Cornelia said as the meeting ended.

The Second Princess wasn't much of a believer in sea monsters and myths, but she couldn't ignore the damage this so-called monster was causing and something had to be done. Britannia's famed Goddess of Victory was going to treat the hunt of the sea monster like hunting down like an elusive foe. Waiting for her outside of the meeting room was his right hand man next to her knight. A man who has served as both his mentor in her younger years and her adviser was a man in his early fifties with a jagged scar going across his face and a broad and heavily muscular body. His uniform had also had a large number of shiny medals upon it.

"Your highness I have found a pair of scientists who are the best in their field."

"I see, are they available?"

"They just arrived a short time ago they should be at the mansion awaiting you."

"Excellent, lead on Dalton," Cornelia said as she followed her close aid and advisor General Andres Dalton out of the government building before returning home to her villa.

Relaxing in the back of the horse-drawn carriage that was taking her home, Dalton joined her as he finished reading a newspaper article reporting another ship that had attempted to sail across the sea, a Britannian ship, had gone down in the South Atlantic one hundred miles off the coast of Brazil. Cornelia sighed at the photo of the reporters imagined version of what the monster was which was that of a flying dragon that was holding a ship in its jaws.

The idea of the monster being like that was absolutely ludicrous, but she like some others had originally considered the possibility of a type of submarine boat might have been responsible. There have been attempts by some scientists to develop such a vessel to travel the underwater world of the ocean, but a successful one has failed to be constructed. Cornelia had considered such a vessel to be a more likely culprit given the monster's obvious preference to attack Britannian vessels.

However to have constructed such a vessel would be impossible for a private citizen, because to have constructed one in secret would be impossible given the resources and materials one would need. But after inquiries and investigations made by the Britannian Government within their own country and outside of it such claims were quickly dismissed.

Still a thought of the possibility remained in Cornelia's mind.

A/N: Alright there was the chapter with Lelouch having vanished; well anyone who knows the books and movies along with some of the hints in the chapter will only need one guest as to what happened lol. Anyway Cornelia is preparing to go hunting for the sea monster and this time is taking steps to properly prepare accordingly, so the next chapter we'll meet who shall be recruited for the hunt. But as for Lelouch, he'll appear in due time of course and I must decide on a pairing. I would like to attempt a pairing that isn't seen much so the choices below are as follow. Monica Kruszewski, Cecile Croomy, Nina Einstein and Milly Ashford...I have a poll going on at my profile to determine the possibility. I had considered Kallen or Shirley, but I am more inclined to try one of the four out. I am open to suggestions however, so please read and review...tell me what you think.

*Updated 07/30/12: Decided on a Kallen pairing with Lelouch.*