Since Sunrise owns Code Geass and Sega owns Sonic, all I can say is that they are highly recommended.
Chapter 1- A Demon And His Shadow
Their names were Lelouch and Shadow vi Britannia. They were sent to Japan, now called Area 11, with their sister, Nunnally vi Britannia. Their new identities were Lelouch, Shadow, and Nunnally Lamperouge, and they were enrolled into Ashford Academy to cover themselves. Britannia is thought to have gone too far, as rebellion has taken place.
- Nobleman's Building -
An old man goes up against who looks like the owner of the building in a game of chess. The old man get's nervous and jumps a little from the buzzer going off.
A man of security states, "You're out of time. From here on, you'll make your moves every twenty seconds."
The nobleman huffs, "Very well, I'm game." The doors open from behind the old man, "Did your substitute arrive?"
The old man is relieved, "Thank heaven I'm saved. Are things going well at school?"
The nobleman takes note of all three students, "What have we here, then? Schoolboys?"
Lelouch, the first of the trio approaches first, "Look at this."
Shadow speaks next, "Tch, a nobleman."
The nobleman continues, "I envy you kids today, having so much time on your hands. Time for regrets. What're your names?"
"Lelouch Lamperouge."
"Shadow Lamperouge."
The third member, Rivalz looks at the board, "Whoa! Look at this board! You can't win this one, it's impossible, right?"
Shadow taps Rival, "How much time left until next class?"
"About twenty minutes if we bust our hump."
Lelouch replies, "Then be sure to drive safely on the way back."
"Huh?"
Lelouch sits, "I'll need nine minutes."
Shadow looks at the old man, "About yesterday..."
The old man nods, "Understood, sir, we'll discuss it later."
The nobleman concerns himself, "Nine minutes? You only have twenty seconds per move!"
Lelouch picks up his king, "Enough time."
"Hmm? You start with king?" the nobleman laughs at Lelouch's move, whereas he smiles. Shadow smiles along with him.
- Ashford Academy Courtyard -
Lelouch and Shadow's friends, Shirley, Milly, and Nina discuss what they are doing.
Shirley keeps on, "They're off gambling for money! Lulu and Shade waste their intelligence on stupid things. If Lulu applied himself, he'd get high grades."
Milly mocks Shirley, "Oh, I wish my darling Lulu could be a serious young man. How adorable!"
Shirley slightly blushes, "P-please , Madam President..."
Nina sighs, "But why did Shadow get involved?"
Milly takes this chance, "I don't suppose you have a crush on him, do you?"
"N-No! Absolutely not!"Nina flushes an unexplained red in embarrassment.
- Nobleman's Building -
The nobleman drops an object from his hand and Rivalz goes on, "I love how we play against nobility. When they lose, they always pay out of pride."
Shadow smiles, "Eight minutes, thirty-two seconds. New record."
Lelouch nods, "He also didn't have much time to move either."
"Heh, as opponents go, noblemen are tepid. Just over privileged parasites."
Rivalz walks in front of both brothers, "Why not challenge an Eleven? They're nothing like us Britannians. Huh?"
An announcement is made and the prince named Clovis appears on the big screen, "To all my imperial subjects, including, of course the many cooperative Elevens who choose to serve the empire of Britannia. Do you not see my pain? My heart was ripped from my chest only to be ripped apart."
Shadow huffs, "Clovis. Poor, poor Clovis."
The trio reach the motorcycle parked, Rivals breaks the silence, "Well, aren't you two gonna join in?"
Lelouch counteracts, "Aren't you?"
"Heh, it's sort of embarrassing."
Lelouch agrees, "Besides, spilling tears over them won't bring them back to life now will it?"
"Dang! That's dark, buddy."
Shadow agrees with Lelouch, "It's all about self-satisfaction, it matters not how hard you try. He can't do it. There's no way he could change the world." He activates his Air Shoes as Lelouch and Rivalz ride the cycle.
On the highway, Shadow is behind Rivalz and Lelouch. He catches up and skates on his brother's side, "Nice first move, using your king like that."
"If the king doesn't lead, how will he expect his subordinates to follow?"
"Rivalz, behind us!"
"Ah! We're gonna die!" As the trio speed up, the giant truck swerves and rams through three cones on the left.
The three stop, wondering if they take fault for the giant Semi truck crashing in a construction yard.
Shadow and Lelouch head to the site, leaving Rivalz with the motorcycle.
Lelouch attempts to move rubble, "Hey are you okay?"
Shadow climbs up, helping his brother up as well. He shouts out, too, "Hey, is anyone alright?" That's when a voice goes through their head...
It's you two! Finally I have found my...
Shadow looks around, "But where... Hey! Anyone in there?"
The semi-truck is jerked backwards and the pair falls in the opening of the roof. Lelouch stands up, "And you'd think they put a ladder on the inside, too." He and Shadow hear military forces gain on the truck.
Shadow and Lelouch hide as a door opens to a young woman walking towards one end of the cargo.
Shadow whispers, "We've seen her before."
Lelouch is too late to stop a giant door from closing, "Crap! These guys are real terrorists!"
Shadow tries the phone, "No cell phone service either, out of range, probably old subway line of the ghetto. Maybe we should take the radio left behind." he grabs the radio.
"Seems we'll have to take their protection."
"Brother," Shadow observes a metallic hemisphere, "You think this is poison gas?"
"Best we use caution."
"I bet Rivalz is pissed that we left him."
"He'll be fine, as long as we get back in one piece."
Suddenly a military officer kicks Lelouch, and Shadow blocks the next strike.
Shadow grows cold, "Are you Britannian?"
The mouthguard pops off, "That's enough mindless murder."
"We're not-"
"Planning to use poison gas? Don't play dumb with me!"
Shadow pushes the officer, "Back off! We're not here by choice. why would brother and I use something of Britannian creation?"
"My god..."
"Mindless murder? Then why do you just eliminate Britannia?"
"Shadow, Lelouch," the officer takes his helmet off, "It's me, Suzaku."
Shadow and Lelouch are wide-eyed as they go back the day of invasion.
~ 2010 ~
Suzaku and Shadow climb up from lower ground. They both grab the struggling Lelouch. All three turn to a mountain in which Britannia makes a battle on for the war against Japan. Soon, most buildings and homes were destroyed. Shadow, Lelouch, and Suzaku are left waiting for transport."
Young Lelouch speaks, "I swear, Suzaku, so help me!"
Shadow agrees, "One day, Lelouch and I will obliterate Britannia!"
~ Current Time-2017 ~
Shadow and Lelouch are at loss for words, "You...became a Britannian soldier?"
"Yeah, and what about you two? you guys are-"
Lelouch cuts him off, "What're you saying?"
A flash of light from the hemisphere holding the poison gas cuts everyone off. As it opens, Suzaku hold a gas mask on Lelouch as Shadow uses his own arm from breathing. They all turn to see a girl in a reinforced straight jacket, only yellow-greenish hair flowing out freely.
"That's not poison gas."
Shadow helps the other two stand, "What is it if it's not poison gas?"
A group of Britannians shines light on all four. Suzaku speaks to the chief, "I was told this was poison gas!"
"How dare you question orders? However, in light of your outstanding military achievements, I'm going to be lenient. Private Kururugi, take this and execute the terrorists."
Suzaku protests, "But they're not terrorists, they're civilians caught up in all this."
"You insubordinate little- that's an order! Didn't you swear loyalty to Britannia?"
"But...I can't." Suzaku's words perk up Shadow
"What?"
"I won't shoot civilians." Now Lelouch is wide-eyed once more.
"Very well." The chief shoots the gun, little did the army, Shadow and Lelouch knew the bullet collide with something else metallic. The chief looks up at Shadow and Lelouch, "Picked the wrong time to skip class, schoolboys."
The truck behind the brothers explodes, sending word out to other Britannian forces, by Clovis' orders, to destroy the Shinjuku Ghettos.
Lelouch and Shadow escape with the restrained girl and has lost the military forces. As the girl trips, Shadow and Lelouch hang to the side. Lelouch tries to process the events, "Just what the hell are you? This chaos is all your fault, isn't it?"All three find an exit, "Shadow stay with the girl and be quiet." Lelouch raises his head up a bit to look around. The last sight seen was a businessman get shot up. After a little girl gets shot when crying, Lelouch's phone goes off, alerting the military forces. the restrained girl is separated from Lelouch and Shadow as they are pushed up against a wall.
"A perfect place for terrorists to meet death. Well done as schoolboys, but you now have no future." the gun is raised at Lelouch.
Then the girl cuts in front of him, "He mustn't die!" She gets herself shot instead.
"Well bringing her back alive was only if possible. Now to deal with you two."
Shadow and Lelouch keep staring the dead "hostage" that added another loss to them both.
The girl's hands reach the two and something flows within them.
You don't want it to end here, do you?
Shadow and Lelouch just listen, confused by what's going on.
You appear to have a reason for living.
Shadow and Lelouch speak, "The girl. Impossible."
If I grant you two power, could you go on? I propose a deal. In exchange for this power, you two must make my one wish a reality. Accept the contract and you accept the conditions. While living in the world of humans, you will live unlike any other. A different providence, a different time, a different life.
The energy continues to flow through Lelouch and Shadow.
The power of the King will condemn you to a life of solitude. Are you prepared for this?
Shadow and Lelouch respond in unison, "Yes. I hereby accept the terms of your contract!"
Both students stand up and look to the small army, Lelouch holds his hand up to his left eye, "What's wrong? Your target's are just schoolboys."
Shadow has his right eye closed, "Maybe you realized people who kill are ready to be killed."
Lelouch reveals his left eye, showing a sigil within it. the small army stops in their tracks, Lelouch smiles, "I, Lelouch vi Britannia, command you. Now all of you, die!"
In two seconds, every pair of eyes in the small army have a red outline to signal complete control, "Yes! Happily, your Highnesses!" Everyone turns towards each other and tons of blood is spilled.
Shadow smiles as a trickle of Britannian blood lands on his face. The same sigil appears on his right eye, "You're sick of no change in this world, correct?"
Lelouch nods, "Everything was a lie. We, ourselves, were in a lie of living. Now, with this power, we can perform the impossible and change this world."
Note: I felt like starting to combine a human Shadow the hedgehog to the first two seasons of Code Geass. The story of the Geass is loosely followed as I thought of some changes for Shadow to be Lelouch's and Nunnally's brother. Shadow's Geass should soon be obvious. Reviews are welcome, flames are highly unrecommended, as this is my second fanfic to start on vacation.