"Steven!"
The Rose Quartz Gem began to glow in Sora's grip, before it floated above him. From the Gem a form began to take shape, the silhouette of a woman wearing a flowing dress and long hair was present. Before it shrunk until it was in the shape of a small child, and from the silhouette a solid body formed and out came a boy. He was short, wore a pink shirt with a golden star in the middle, shorts as well as slippers. He twirled in the air, a smile on his face, as a pink shield made of energy formed in front of him hand.
He landed in front of Sora, and held the shield forward. The two exchanged a nod, before they charged forward.
(Steven's main ability would be a constant forward shield for Sora, this prevents most forward attacks from landing. Sort of like Goofy, but Steven's shield provides a reflective defense. Using the Limit, one would have Sora and Steven ram forward ala Sonic Blade but with a large radius at the same time not as far, the other would be an AOE where Sora and Steven would toss their weapons around them in a circle. The final Limit would just be Steven doing the spiky bubble shield, and Sora would whack it as hard as he can so that it bounces around the arena)
" Taylor!"
The buzzing of insects became apparent, Sora looked around and a single butterfly landed on his shoulder. The next moment a swarm of insects, once that seemed to have come from nowhere, circled the boy. The creatures enveloped him, and as quick as they came they dispersed. Sora looked around in shock, and turned to his left to see a girl standing beside him.
Dark hair framing a plain looking face, while a pair of spectacles hung over her eyes. She wore a green hooded sweatshirt and baggy jeans. She rubbed her arms for a moment, before she closed her eyes and let out a sigh. The moment she opened them again they turned determined and stare forward with no fear.
She turned to Sora and gave a nod, one that he returned, before she spread her arms to her side. The insects came back with a vengeance.
(Taylor's ability is a little harder to think about, but I've decided on an automatic attack Summon. In the same veins as Stitch, only hers attack the surrounding enemies instead of the enemies on the other side of the screen. All enemies take a constant damage, balance by it being someone very low damage. The Limit would be unique in the way that, once activated Taylor's bugs would stop attacking and a timer would appear. Sora has to attack as many enemies as he can during that period, and once the timer ends every enemy that Sora hits is 'tagged' and Taylor's bugs would swarm each enemy. The length would be determined by another Time Limit, and if there are no more enemies, the bugs would simply just buzz around)
" Doom Guy!"
The Demonic Gem shined in a dark green light, and it jumped from Sora's hand. The gem started to twitch to the left and right, and from the Gem a clawed hand popped out. It was then promptly squashed as a large heavy green boot slammed down onto it.
The rest of the body began to appear, revealing a man wearing heavy a suit of power armour complete with a helmet that covered his face.
The man slung a gun over his shoulder and nodded his head at the boy.
"Megumin!"
The moment the name was called Sora stumbled as a gigantic explosion occured in the background. The boy turned around to see the giant cloud of dust that was growing from the far distance with a look of surprise.
The look of surprise turned into confusion when something appeared to be flying towards him at high speeds. The boy narrowed his eyes, before they widened when he heard the screaming. Sora quickly held out his arms, but the thing slammed into him hard enough that both of them tumbled to the ground.
Both of them groaned out in pain. Sora recovered first, lifting his head to look at the dazed girl lying on top of his chest. The girl blinked and looked at him with the eye that wasn't covered with her eyepatch and gave a rather sheepish smile.
She got off from him hastily and turned away as if to ignore what just happened, she pointed her staff forward "The Great Megumin is here!"
(Megumin, in the usual spirit of Kingdom Hearts, has been buffed so that she can use more than one explosion. The gimmick is that you need to hit a number of enemies that would then prompt a Reaction Command that would have her cast an Explosion spell, obviously smaller than usual. The limit does away with this and turns it into a button mash Reaction Command prompt where if enough Megumin would summon the magic circles for the Explosion spell, before Sora points his Keyblade to power it with light turning it into a Faith bomb basically.)