Upon landing within the Kishin's domain he sees Maka with Patty and Liz as well as Black Star and Tusubaki. Everyone prepares for the final battle Kid exclaims "it won't be easy prepare for everything and anything" Soul gets ready to play the piano at a moment notice, Maka prepares her cannons and Black Star gets pumped with Tusubaki.
As the group connects their wave length they prepare themselves for the battle to come as the Kishin looks slowly towards them. The group looks shocked Kid looks concerned "What happened to him?" as Soul responds "He didn't look like that a second ago!" at that moment Kid realised something "That was his problem he must of killed Arachne and swallowed her soul."
The Kishin smiles "Insects yummy! Why don't you come closer?" Kid exclaims everyone ready Soul's about to play as soon as Soul hit the first note the battle began. Everyone fights side by side as each slash of the sword, slice of the scythe and ever bullet fired lands. But all the Kishin does is blocking or dodging either one or every time his hit his neither hurt or phased by the attack.
Black Star speaks "Are you sure we doing anything?" Kid responds look around at the barrier it looks like it's starting to weaken. Liz exclaims "It does look like its getting thinner." The Battle continues as they try pick up the pace pushing each other to the limit trying to wound the Kishin. Kid speaks "Pick up the tempo lets hit this guy harder and faster!" As Black Star continues "Are you listening Soul are you even playing to our speed."
Soul responses "I am! Are you guys even listening to me? I'm building up to the climax." At that moment as Kid is about to use the Genie Hunter. Soul stops and changes back collapsing as his sucked into the madness of the Black Blood.
Kid Screams "Soul! What Happen?" Maka and Black Star turn back around as they notice The Kishin laughing and the fact that has not a single scratch on his body. Kid starts shaking Soul "Get your ass in gear wake up."
Black star asks "What happened to him his kind of lying there" Asura is laughing "Well it looks like he went on a sea food diet!" Asura vanishes as Maka and Black Star try to find him.
The Kishin summons illusions as he speaks "Oh he tried so hard to push you all past your limits and he succumbed to the Black blood now an empty husk. Such a weak pathetic child all power comes at a cost, his was his sanity. He wanted both and ending up losing it all."
Black Star yells "Shut up you are the weak pathetic fool" as he hits one of the illusions with his soul wave length disabling the Kishin's illusions in the process. Maka and Black Star continue to attack Asura.
Kid looks at Soul thinking "Shit his starting to lose his perfect colour and his pulse is decreasing rapidly." Kid looks like his about to cry as Maka yells "what on earth are you doing? Why are you saving doesn't he mean the world to you?" Black Star continues "Go get Soul and drag his arse back out here!"
Kid stops to look at them sternly "you guys sure you can make it without me" Black Star laughs "the way you're going this fight will be long over before you get back." Asura laughs "Pathetic children you couldn't save him if you tried."
Maka yells "this doesn't concern you! Your fight is with us!" Kid places his forehead on Soul as he tries to focus. Into the madness of the rabbit hole he goes, Kid focuses on his new surroundings "Where am I?" as he looks around he notices a open door with stairs leading down.
Kid enters the door following it down the stairs he reaches a door! He notices Soul sitting down "What the hell do you think you're doing Soul sitting down, there's a battle going on or have you forgotten?"
Soul responses as Kid notices the shift in personalities as Soul gets up to close the door "I was kind of trapped here." Kid responses "If you were trapped here, why exactly you closed the door?" Soul smiles "to stop the madness from coming in here that's why, I locked myself in here to stop the madness from completely consuming me."
Kid looks at Soul sternly "How do you propose we get out? Look around you do you see any doors or windows?" Soul responses "There is a way through here as he holds up a box that's locked" Kid freezes looking at the box remembering that dream he had and what face Soul said "I want you to remember something very carefully do not open the Blue Box unless you're absolutely prepared or you will absolutely lose him forever."
Soul continues "Kid you have the only key that opens this box" as Soul hands Kid the box Kid Smiles "you are not really Soul are you?" Soul gawks "What of course I am" Kid smiles even more "You're so dumb I know Soul better than this he would never put himself in this position locking the only door and giving the only key to someone else I bet you any money that Soul is really inside this box yelling at me to not open it."
Fake Soul smiles "oh your smarter than you look I guess I wasn't prepared for you! How did you guess?" Kid looks at the imposter sternly "answer me first! Who are you really?" the imposter smiles "It's a confusing question here is a confusing answer I'm Soul yet I'm not think of me as being a part of Soul, but if you want a name you can call me the Little Demon"
Kid looks at the demon then back at the box "Well demon know this I will open this box and I will save Soul no matter what he means the world to me and I'll stop at nothing to get to him back!" as soon as kid finishes he slips the key into the lock as he takes a deep breath he unlocks the box getting swallowed within.
Kid floats towards Soul as Soul yells at him "What the hell you think you're doing?" Kid smiles "To save you my love of course!" Kid pulls Soul in for a kiss. As the Black blood consumes them they glow a bright light together as the room changes back to normal the little demon sighs "I lost?"
Soul smiles "Well you going to get more than that" he picks up the demon and swallows him whole. Kid amused "Why would you do that!" Soul lifts his finger as he tries to speak in a wise old man voice "To make one that was two as one again" as he laughs.
Kid joins in laughing "Well that's one way of putting it now let's deal with the problem that awaiting us outside we have a Kishin to deal with."
Kid and Soul wake up in reality as they are greeted with something they weren't expecting Maka was fighting the Kishin alone and Black Star was knocked out. However that wasn't what surprised them the most the fact that Maka was fighting The Kishin alone as a weapon mister is was surprising them.
They soon noticed something else Maka was not even awake at the time. The Kishin finally manages to grab Maka slamming her into the ground smiling he says "Let's wake you up from your deep slumber" he pushes his hand within her chest as she starts to scream.
Kid looks at Soul "Let's go Soul" Kid lunges at the Kishin with the Genie Hunter passing straight through him they look back Kid responses "What happened?" Asura laughs "Do you really think I'm as evil as you think I am?"
Kid starts to think to himself "If his not evil then there's only one other choice we have to use the Soul Hunter Soul we need to focus now more than ever we need to put our faith and love for each other in this next attack or we might lose."
Soul and Kid focus as they combine their wave lengths together "Soul Resonance" once again Souls shape changes though more different than the Soul Hunter instead of a blood red hew it's a lot different it has a white glow to it.
Asura stops laughing as he looks towards Kid and Soul thinking to himself. Kid looks towards the Kishin "It looks like it's your unlucky day" kid smiles as he lunges towards Asura the blade passes through Asura as he attempts to block it.
Asura turns around laughing at Kid "Looks like you failed again!" Kid smiles turning around "Or you just haven't noticed yet" he points at the white crack The Kishin looks at the crack not being amused "This is nothing" as he makes an attempt to heal himself the crack spreads as Asura starts to panic "What it should of healed by now? Why isn't it going away?" he starts screaming hysterically now.
Kid simple says "That's not a normal wound you're suffering it's something more powerful than the Soul Hunter I created I guess you can call this the God Slayer!" Asura Screams while disappearing and fading away into nothing "I don't want to die!" leaving only the Soul of the Witch he last ate Kid smiles at Soul as he Passes out looking at Soul hearing him call out his name.