O' Hi guys! I've wrote another Crossover Fanfiction, But I know It was an Unexpecting Twist here, I've been planning to write this crossover between Halo and Touhou, So we are going to the Prologue.

August 19, 2557...

It's been four years after the Human-Covenant War ended and 1 month after the Composer and the Didact was Oblitherated, The Largest UNSC Battleship Cruiser "Infinity" went off on a second tour in Requiem and had been studying any Forerunner Technology inside the Shieldworld "Requiem", Meanwhile, back in the Main UNSC Solar system, The Peoples of the UNSC on Earth were still rebuilding some cities in the States of America, It's because of the Composer attacked Earth since one Month ago, Some of the Earth cities was still in one piece, But however, Another war will come again and strike Earth once more.

Dark Side of the Moon, Lunar Capital.

The Lunar Capital was in a current problem of Over-Population and Chaos, Most of the Population of Moon Rabbits stayed in slums around the Capital, The Lunarian Scientists must do for what they could, But no avail, Meanwhile, In the headquarters of the LDC or known as the "Lunarian Defense Corps", Watatsuki no Toyohime sighted in Worriedness it is because of the Current Problem around the Lunar Capital, Her duty was to protect the Capital from the Humans as they would not show their existence, suddenly, someone knocked the door.

"Come in." She called.

A Lunarian Messenger came in and spoke.

"Watatsuki No Toyohime, Our Emperor Tsukuyomi wants to speak with you inside the Palace, Immediatley"

'Hmm...I wonder why do the Emperor wants." She thought. 'However, It is something Important.'

Lunar Palace, One hour later.

Toyohime stepped on the ground of the Royal place, the Palace was Huge and has 5 floors, It was Surrounded with huge walls, Even it has Large Assembly Area on front of the Palace with amount of exact 500 Palace guards and other 500 Royal Elite Guards, She passed through them and went inside the Palace and revealed a Large hall, Walls filled with paintings and a Room filled with Pillars, The Palace was like a Labyrinth, But she remembered the way, Since she was a Young but overly aged Princess lived inside the Palace, Until she found the Holy Chamber of the Moon God, Lord Emperor Tsukuyomi, she takes a heavy breath before she knocked.

*Knock* *Knock* Knock*

"Come in." he called out from the Camber and thus Toyohime came in.

"Ah yes, Watatsuki no Toyohime, It seem you know that why you were here."

Toyohime kneels before the Emperor.

"I've serve under you for centuries Milord." She spoke. "But what do you want to talk about?"

"I know that our Current Problem was in a brink of Chaos out there." he said. "But I have a plan, it seems that we should move our Population to there."

"To where, Milord?" She asked. "at least that our scientists are still in research to make a maschine, For what the humans called it "Slipspace", But it always Failed."

"I mean that we are going to move our entire army to Earth, But not the entire Population."

Tsukuyomi's words strucked Toyohime as she faced him wide Eyed.

"What!? The Human Homeworld!? But that is-"

"Silence Toyohime, I wanted to speak with you, Everything."

Tsukuyomi interrupted her as he began to spoke.

"I knew that the Human Forces are stong and Much superior than our own, Is that Correct?"

Toyohime nodded.

"It's been five hundred years." Tsukuyomi sighted "Since the humans got their Technology and becoming themselves as Giants they are, They have already colonized the Stars, but we are like Mice hiding under the shadows from the Humans, until they have a War against this "Covenant" until they reached earth, We just hoped that the Covenant would win against those Humans so we become Giants once again, But Failed, However, Four years after the war, the Humans are still in a weakened state and still rebuilding their Homes, And I think you get it now what I mean, we are planning an invasion on Earth to capture their technology for our own."

"B-but, They have Superior technology than ours, Even they would call their Colonies from the Stars and will destroy our entire army!" Toyohime Exclaimed everything, but the Emperor raised his left hand to silenced her.

"I will not lead our race into Extinction." Tsukuyomi said. "All we have to do is this, First, we have Teleport our troops and raid every Humans ships even their Space station on this entire Solar system, second, cut off the Connection from their Colonies, Third, Commence Orbital bombardment on earth and the half of the Moon, Colonized by Humans, then Fourth, kill every Human beings and settle in Earth and the Red Planet."

Toyohime stood in awe for what she heard was ... a Genius Plan from Lord Emperor Tsukuyomi.

"It seems...Legit." She spoke in approvement.

"Indeed."

Requiem, UNSC Infinity

The UNSC Infinity finished their tour in Requiem as they successfully escaped the Supernova, The Crew of the Infinity cheered as Captain Lasky set Infinity on course heading to earth by using slipspace.

UNSC MAC Platform, Earth, 1 minute before the attack.

A UNSC Chief personnel was sitting on his Office desk and watched over Earth, Suddenly, a monitor turned on and revealed a a scared personnal crew.

"SIR! THIS IS UNSC BLOWHORN! WE'RE BEING RAIDED BY UNKNOWN FORCES! I REPEAT WE ARE-*Phew*"

Then the monitor shuts down as Chief personnel stood in schock until he alerted the UNSC Ships from the orbit with the speaker.

"This is Admiral Hilton, To all UNSC Ships of earth's orbit, UNSC Blowhorn was been raided by unknown Forces, I repeat, UNSC Blowhorn has been-"

*BOOM!*

Suddenly an Explosion erupted as the ground shaken, he quickly went to the window and saw for what happened, Multiple Explosion erupted all around the MAC Platform Station, He reacted quickly as he walked to the Speaker.

"To All personnels of the UNSC MAC Platform Stationn, We are been under attacked, This is not a drill! I repeat this is not a Drill!"

Meanwhile, In the Halls of the MAC Platform Station.

"I Repeat this is not a Drill!" said a speaker, which is voiced by Admiral Hilton.

UNSC Civilian and Military personnels scatter in Panic, Many Civilians Personnels were shot down by unknown forces, The UNSC Marines fired their MA5D and as the Civilian crew drew their M6H Personal Defense Weapon System and fired to the Unknown Enemy, But they are too Many.

Back into the main office.

"SIR THEY ARE TOO MANY!" Shouted a Marine from the other rooms of the UNSC MAC Platform Station. "WE NEEDED BACKU-*SHHHH*"

At this moment, he lost many contacts all around the MAC Platform Station, But not all around the Platform, Even he saw UNSC Ships are heading towards Earth as explosions erupted from it's hull.

"Dammit." He Cursed. "Who could possibly-"

Suddenly, he heard a knock, Hilton pulled out his M6H Pistol as he pointed towards the door, Seconds later.

*BOOM*

Admiral Hilton fell backwards as he dropped his M6H Pistol to the ground by the cause of the Explosion, Now shadowy figures came inside the room, for what it revealed to be Armored Troops with an odd looking rifle pointed at him, now a Purple-Haired woman came inside, Pointing her sword towards him, It was Watatsuki No Yorihime.

"Wh..Who are you?" He asked.

"...You're golden age ends here human." She said in a cold voice as she sheated her sword back into her Scabard. "Lieutenant, Take him away."

"Yes, Milady."

Yorihime's objection wasn't finished yet, as she began to give an order to her squad.

"Alright, All we have to do is to cut off the Communications from the Human Colonies, before they would call Reinforcements from the Colonies."

"Hai!" They bowed as they began to cut off Communications from the Human Colonies.

Later on after the attack, The 22 million Lunarian Armies splitt into two began to teleport on Earth and Mars, However, They are not yet finished, The Lunarians engage their Bombs of Full destruction heading towards Earth before they would send their armies and after they hacked the UNSC Military so they would not engage their nuclear missiles, Now the Earth's Cities and Towns were ablazed by these "Bombs", Millions have died, The only ones who survived went Underground, But this isn't the End...This was just only the Beginning

To be Continued.

PS: UNSC Infinity will reach Earth by using slipspace before the Lunarian Attacked, And masterchief would be here in this fic.