I don't own Sonic the Hedgehog, Cardcaptor Sakura and Digimon, they belong to Sega, Clamp and Toei Animation. The OC belong to CharlieCharly18

Cha La Head Cha La (English Cover)

Come slide down rainbows in the sky, let's fly away

Sonic is running at the speed of sound, bouncing from the tree, kick some large boulder away then he use boost to destroy more of it then flip himself then run away.

Like a bird, you're free to see the boundless face of the earth

Sakura use Fly and Dash to fly along with him with a smile on her face. Sonic smile when he see his sister, he then boost toward the screen

Let the wind blow you like a kite and glide away

Meanwhile in Odaiba the Digidestined are in their home, Joe is watching the sunset, Caleb is watching TV along with Mew and Deveemon

Far beyond the clouds you'll find another place

TK and Kari are playing in the park along with Tai and Matt

If the road ahead you seems so cold and gray

A Dark Portal appeared revealed an old man look like an Egg sit in his vehicle fly out of the portal

When night never turns to day, don't you be afraid, go fly away

A mysterious figure and a Jackal walking slowly at the screen

Cha-La! Head Cha-La!

The fire meteor are falling through the sly until sky

No time to hesitate, go on and search the earth

Caleb and the main Eight are fighting the huge robot as it's attacking them, the corrupted digimon are coming at them

Within it lies a magic surprise

a mysterious figure stand still in the mountain, then another figures appear beside him

Cha-La! Head Cha-La!

Sonic and Sakura fired their attacked at the mysterious shadow monster

Be cool, don't be afraid

You've got the power to get you through the night

They grabbed each other hand then spin around to perform a powerful attack destroy more Heartless. When the Heartless destroyed, a jackal appear with red aura watch the battle from a far

Oh, Cha-La! Head Cha-La!

The screen change when Sonic running along with Sakura.

No time to hesitate, go on and search the earth

TK and Kari appear beside them Caleb and the other main eight appear

Within it lies a magic surprise.

Everyone except Sakura are fired their attack at the corrupted Digimon

Cha-La! Head Cha-La!

Sonic gritted his teeth as his eyes burned with blue firey eyes

Be cool, don't be afraid

He then raise his arm to the sky

You've got the power to get you through the night

Tai, Sakura, TK and Kari released their attack

Sparking

Back to Sonic as the explosion appear around surrounded the screen. A blue hair spirit girl appear in front of the screen before the scene change to Sakura, Caleb and the Digidestined appear smiled then Sonic appear between the gang transform into Super form, smirked

In the strange that look like world Mobius that Sonic was live in. The river is not blue like it was before, it change to red like blood. A shadow hedgehog walk in with red dot eyes, grinned evilly at he watching the battle Sonic and the heroes vs Tabuu.

"It's seem Sonic 'Prime' the Hegdehog got stronger than before." the shadow hedgehog said, crossing his arm while he's watching the other heroes and villains in everyworld.

"Those are still trying to capture the Hope and Light to destroy every world. It's seem the Child of Hope and Light are important to them, must be to forge The X-Blade, sound interesting. But now i must connect the worlds so i can rule the Omniverse first i must take revenge on Sonic Prime for destroy me then steal the alternate Sonic, his friends, the other heroes and the Digidestined souls" the shadow hedgehog said, decided to call his Guardian, they appeared behind

"The Guardian, It's time to send the CD and the cubes to connect every world and i must tell Shannon and the Cult of X about it, praise yourself" he added before the Guardians disappeared, the shadow hedgehog turn to the mysterious Jackal. "And you Infinite, find the Eggman that stuck in Ifrit world, get him out of that world and find the Lord of the Light and the Embodiment of Chaos and Darkness using the Emeralds to awake them" he said

"As you wish" Infinite said before he disappeared. The shadow hedgehog then look at the statue that look like Link, Heroes of Time

"And you, you must use your power to corrupt some worlds so the guardian and the Cult of X easilly to put the disk and the cubes, if you susscess, you can tortue Link, the Heroes of Time as you want" The shadow hedgehog said, grinned evilly, the statue then disappeared

In Tomoeda the life still goes normally for Sonic, the peoples of Tomoeda started to accept Sonic to live in the city, he help many innocent people and save a lot of people life.

"Well you shouldn't worry about her too much, Li-kun" Sonic said, communicate over his phone, he is now adopted by Fujitaka, walking in the street carrying a food basket

"I know but i worry about Sakura-chan will get too powerful. My mother said when the magicians are too powerful, they faced their tragic death, nii-san. I just don't want Sakura become too powerful, she uncousiouly create a card that she doesn't know, with that happen she can't control her magic and probably has same fate like them" Syaoran said speak through his phone, staying in his house in Hongkong (Nii-san is a word that a boyfriends usually call his girlfriend older brother to show respect or the younger can call older male nii-san)

"Hey don't worry about it, Syaoran. the Chaos Power, it start to balance with Her magic power that i feel it begin to combine to her magic, so it reduce her energy when she use some of her cards so she won't be so exhausted after she cast a spell. Also i have trained with her to control her magic and chaos power since you left Tomoeda" Sonic ressure him. Since they usually contact over phone as Sonic has international cards, they are grow close each other, like sibling so Sonic can call him Syaoran or Li as he want.

"Maybe you are right, i worried about her too much" Syaoran sighed

"Well, she is a bit mature but still too innocent, i just make sure that she is alright" Sonic said

"Arigato, Nii-san. Please take care of Sakura-Chan for me" Syaoran said

"Of course, friends help each other, right" Sonic said

"Right, say hi to Sakura-Chan for me, Sonic, Jaane" Syaoran said, hang up his phone. Sonic also pulled the phone away from his ear, sighed about the day with the other heroes, he missed them, then he spotted the truck carrying bag of money while the robbers seem to be terrorist fire their gun at the police who are chasing them

"Not today, pal" Sonic yelled run after them, he begin to run onto the roof of buiding, starting to chasing the truck, he do some parkour move to avoid being hit by random object on the roof, he then leaped himself toward the truck and landed on the top of it, the terrorist feel something landed on top of their truck start to fire their assault riffle at it, Sonic use his speed to avoid the bullets being fired by them, he then use Stomp to landed inside of the truck after he spot small hole created by the bullet. The terrorist start to attack him with riffle, he barely dodge the bullets, kicked the gun away use knee into terrorist gut and kicked the other terrorist in the face. The driver get his pistol and start to shoot at Sonic, the blue hedgehog quickly dodge his bullet, use karate chop on the driver wrist to make him drop his pistol. The terrorist recovered tried to attack him with his gun, Sonic quickly grabbed the gun, headbutt him then knocked him out using stock of a rifle. Sonic then foot swipped another terrorist, kicked him the head and hit the driver with his food basket who are planning to sneak attack him. He quickly brake the truck while stopping the driver, he elbowed the driver in ther head. The truck then stop moving as the police catch up with the truck.

The police start to arrest the terrorist and get the the money for the bank. Sonic then running, carrying his food basket back to his house give it to Fujitaka

"Tadaima" Sonic called before put the food basket on the table

"You fight the crime again, Sonic" Fujitaka said, notice the dust on his head

"Hai, These crime still in Tomoeda, i kinda tired of them" Sonic sighed before he heard door open

"Otou-san, Onii-Chan, Nii-Chan, Tadaima" Sakura called, put her shoes tidily beside the Soap Shoes

"Oi, Saki-Chan, how was your school day ?" Sonic asked

"Thanks to you taught me your English, my test go easier than before, Arigato Onii-Chan" Sakura said cheerfully

"You're welcome" Sonic smiled give her a thumb up

"Ugh, Where were Shadow in the other day ? I haven't seen him yet" Sakura asked

"Well Shadow has been in forest since Metallix was destroyed, he must be training because he also absorb Rainbow Gem power so he want to tries new ability and train hard. By the way i go for run and" Sonic said before whispered to Sakura ear. "Ready for training on Sunday" Sakura then nodded as Sonic then run off, Sakura went back to her room.

"How was your training going, Sakura-Chan. I feel some sort of energy start to merge with magic power" Kero asked

"Actually it a Chaos energy, it start to balance to my magic power while i was training with him" Sakura replied

"In case, that you can use that to fight against upcoming danger threat" Kero said crossing his small arm, Sakura nodded while look at her new key.

Meanwhile at the world full of flame know as Ifrit world, a round man look like an Egg similar to Eggman but wear different clothes and his moutache is white instead of brown, he was planning to escape from this world. Suddenly a portal appear in the sky, the jackal name Infinite then appear from the portal look at the man

"You look like the Doctor Eggman who created the prototype of Phantom Ruby back at Sonic world" Infinite said, look at him

"And Who are you ?" The man demanded

"I am Infinite, a leader of the jackal squad, former wielder of the Phantom Ruby" Infinite introduced himself

"I am Eggman Nega, the descendent of Eggman, my ancestor failed many time to get rid of Sonic so i must success to get rid of him." Eggman Nega said

"I'm heard about Sonic join with the other heroes specially are the Digidestined along with the creature called Digital Monster or Digimon for short they are from a world called Digital World also the Digidestined can wield a weapon called the Keyblade told by my master" Infinite said

"Hmph Interesting, So do you have any idea to get rid of them ?" Eggman Nega asked the jackal

"Yes, i heard a rumor about the Lord of the Light called Galeem and the Embodiment of Chaos and Darkness called Dhrakon, they are in some realm, we can probably use the Emeralds to awake them and destroyed every world using the light and dark from them" Infinite said

"Interesting idea. With your help we finally can get rid of them" Eggman Nega said before laughing evilly. Infinite used one of his power disappeared

Sonic, he watching the sunset in the mountain, thinking about Galeem and Dhrakon that Ultimus warn him about them

'It seem they are a bit stronger than Tabuu, Xehanort, Kronika and Lucemon but What do they want ?" He thought, watching the sunset. Suddenly the shadow appear around him and charge at him. Sonic startled at the moment, before he could react, the shadow start to attack him rapidly, it knocked him away. He landed on foot and shocked when he saw the shadows

"What the, Soulless !?" Sonic yelled in shock seeing his familar enemy, The zombie Souless begin to attack him. Sonic flipped away to avoid it attack he then use Sonic Wind to destroyed one of them, Homing Attack and Axe kicked at another one

"How could be the Soulless are here, they should be destroyed after their master killed" Sonic landed on feet before jumped away from their attack

"Sonic Wave" he fired energy wave at them knocked some of Soulless away, kicked one Soulless in the face, they seem regenerating after being injured by the attack, Sonic quickly fire White Blast to destroy them completely before it complete regenerate themself. Sonic then drop kicked into it gut, do 540 kicked directly into it's face when it regenerated itself, fired Sonic Cracker at it before he perform Blue Thunderbolt to destroy it, more Soulless come at him.

"Wind Pulse!" Sonic perform powerful explosion to destroy the Soulless come at him as he instantly killed the Souless. Suddenly a giant metallic hard grabbed his body and slowly lift him up

"Are you impressed at our minions" a voice called

"Eggman Nega !" Sonic yelled

"Suprise to see me, Sonic." Eggman Nega grinned evilly

"How!? How did you escape the Ifrit Dimension ?" Sonic said in shock

"I expect you ask me that question, don't you. This is an answer, an old enemies of you brought me from the Ifrit, now i want the Chaos Emeralds from your." Eggman laughed evilly point a laser gun from his Eggmobile at him and fired at him make him scream in pain. The Chaos Emeralds slowly split up with him, he tries hard resist the laser beam from Eggman Nega. The laser beam wouldn't let him to move, his stamina begin to faded away, he has no choice but activate the Rainbow Gem. The Chaos Emeralds begin to react with the Rainbow Gem inside, they glow brighter and brighter than before and bigger

"What!?" Eggman Nega yelled in shock. The Chaos Emeralds start to resist the laser gun as the gun get electrocuted and explode, The Emeralds created large shockwave knocked both Sonic and Eggman Nega away. The Chaos Emeralds grow bigger than before, Sonic look up at the big Chaos Emeralds, start to split themself and disppeared to go to another worlds.

"Gah you are lucky. Next time i will not go easy on you" Eggman Nega exclaimed flying away

"The Chaos Emeralds Its become..." Sonic said, image the Emeralds that he saw

"The Super Emeralds" Sonic whispered, begin slowly got up but fall knee and fall unconsious. Meanwhile Sakura is waiting for Sonic comeback but he does not come back

"What take him so long ?" Sakura wondered

"Probably he fight those crime or take a nap on the mountain" Kero said, crossed his arm

"I don't know, i feel something bad happen to him, i feel his energy got lower than ever. I should check him in the mountain, maybe i won't come back for a while" Sakura said prepare her key

"Key, which hide the power of the Rainbow Star, Reveal your true form before me. I, Sakura Kinomoto, command you under our contract. Release!" Sakura command her key transform into her new wand. Her wand has five-point Rainbow Star inside a circle with five-point stars in each Tip of rainbow star inside and big feathered wing below the circle, she then cast Mirror to make a clone of herself

"Can you stay here for while, i have a busy thing to do" Sakura said as her clone nodded, she then cast Fly as the wings appear on her back and fly away to find Sonic

"Are you Alright Sonic Prime !" A voice called behind him, Sonic slowly open his eyes turn his head, eyes windened in shock when he see a young blue hair girl tries to wake him up

"Aria! How did you get here, i thought you are still in Spirit world?" Sonic asked her

"I honestly don't know about that too but i hear someone called me and told me about upcoming dangerous threat to destroy the Omniverse, I sense something dangerous spread out every world but i didn't know who they are then i got transport here warn you about it" Aria explained

"But you are still in spirit form" Sonic said

"You forget that i can physcially contact with living person, don't you" Aria remind him

"Oh Sorry about that" Sonic said scratch his head, embarrassed. "But we gotta find Eggman Nega, he must go somewhere" he added

Sonic run along with Aria who searching for Eggman Nega after he encountered him for the last time after he thought Eggman Nega is destroyed in Blaze dimension.

"Damn it, where is Nega ?" Sonic growled, looking around. Aria then notice something wrong in the trees

"Aria, what wrong ?" Sonic then asked confused

"Prime, i sense something wrong over there" Aria said, pointed toward the tree. Sonic then slowly approach the trees, he notice the dark aura appear behind the tree, Sonic eyes windened in shock that the grass is destroyed. He turned around see the dark beam fired at him, he then quickly swatted his arm, deflect the attack. A woman titan then fired sandstorm at Sonic, he quickly jumped away and counter her with Sonic Storm, knocked her away. She then tied Sonic with telekinesis

"FLASH!" Sonic yelled, release the shining white light, stunned the woman titan know as Kronika. Sonic then give her a powerful Tornado kicks send her into the wall rock, he then dodge a sword like a key know as Keyblade was throw at him. A white and black dress man know as Xehanoth pick up his Keyblade and create a powerful wind at Sonic, the blue hedgehog then counter back with Sonic wind, cause the explosion, Sonic then fall knee, panted. Xehanorth then teleport behind Sonic, tries to slash him, Sonic by reaction caught his Keyblade make Xahanoth eyes windened in shock, Sonic then kneed into his gut and punched him in the face. A blond man with 5 angel wing and 5 demon wings know as Lucemon fallen mode fired the dark beam at Sonic again. Sonic deflect it away using Insta Shield

"Paradise Lost!" He tries to punch and kicks Sonic, the blue hedgehog dodge all of his attack and give him a roundhouse kick into his face. Sonic landed but panting heavilly

"Damn it, The Prime is much more skills than those meddler and the Digidestined" Lucemon growled

"Don't Worry about it, he is has few energy inside of him, Lucemon" Kronika said

"Then We could kill him easier than before" Xehanorth smirked

"Xahanoth, Lucemon, Kronika what do you want with me ?" Sonic demanded, the 3 villains seem not surprise as Sonic know their name, Aria glared at them

"Don't you hear my words, Prime. We are here to elinimate you so we capture Light, Hope and the pure heart princess to forge the X-Blade. Since you are the Miracle with Determination, which it immune to the Dark Side, we will kill you first, so we can capture the Hope and Light easier" Xehanoth said point his Keyblde in front of him

"Then you must catch me first" Sonic said, run away. The 3 villains the chase after him. Sonic is out of his Stamina and energy after being hit by Eggman Nega, he just have few of them as he still has speed but fighting 3 of them is too hard for him, he keep dodging their attack, he cannot fired some strong energy attack, he can hit them with physcially contact. He get hit by one of Xehanort attack, get slashed multiple times by him before get knocked into the tree. Kronika kicked Sonic in his back, punched him several time casting some spell at him before firing blue laser at him, hit him directly at his back, Lucemon use Paradise Lost to do combo at Prime before charging up dark energy beam and fire at him into chest. The golden rings inside of him begin to react, it then merge with Sonic heart, strange thing is his heart is look more different from the other heart and the pure heart. The heart then create strong light aura around it block the dark beam away.

"What!" Lucemon exclaimed

"Impressed, you can resist Lucemon dark beam attack" Xehanort said, smirked. Sonic got up slowly panted heavilly, All the villains are charging their attack at him and fired

"STOP !" a voice yelled reveal as Aria landed in front of Sonic create shield barrier block their attack before create a shockwave knock them away.

"Leave him alone !" Aria yelled

"Ah you must be Aria princess of Aether, killed by Shinnok. And here my words, the Princess of Aether and Prime of Omniverse, we will come back for you and capture the Child of Light and Hope to forge the X Blade. Remember that" Xehanort said before disappeared along with Lucemon and Kronika. Aria then check him

"Are you alright, Prime ?" Aria said with a bit worry

"I'm okay, really" Sonic said, get up before a voice yelled reveal as Sakura

"Onii-Chan!, Dajoubu ?" Sakura called before fly down, clearly not notice Aria behind him

"I'm really okay, don't worry" Sonic ressure her. Sakura then notice Aria who in spirit form behind the blue hedgehog, Sonic notice the situation then sweat dropped

"HOE!"

After a while Sonic explained to his sister, she finally come down after seeing a ghost

"I'm Sorry for being rude to you" Sakura said in English, embarrassed

"Well I'm sorry for scare you, i didn't know that you are afraid of ghost" Aria apologies. "I'm kind of suprise that you are the sibling despite the different species" she added

"Well, i'm adopted so that make sense" Sonic said, shrugged

"Onii-Chan who were attacking you, earlier ?" Sakura asked her

"The 3 villains that i told you before attack me and Eggman Nega tries to get the Chaos Emeralds from me but it resist, become the Super Emeralds, split up and travel to another world" Sonic explained. "The thing that i worried te most is the Soulless are return" he added, Sakura eyes windened in shock

'Does...Does he really return !?" Sonic thought

To be continues

Information:

The Soulless is a creature from a person who lost their soul, only the body and heart remaining but heart get corrupted or destroyed and the body get transformed into unknow lifeform. Unlike the Heartless, Nobody and Dream Eater, they are stronger, smarter and have their own tartical to attack the victim, all the attack even the Keyblade attack can't destroyed them completely, they can regenerated themself except it destroyed completely with strong energy attack. Once a victim killed by a Soulless or it's Master, the victim will transformed into Soulless