AN* As usual I do not own this, except for Shinku, and no i do not own rights to the game Batman Arkham Asylum(which is what the next few chapters are based off of)
Prison
The three heroes pulled up to the asylum to see that the police were there and waiting inside. As Shinku entered he took note of all the security measures and exits, making a mental map of the place.
"Welcome back Joker." A guard said as several other guards grabbed Joker and strapped him down.
"James! How are ya?" Joker laughed.
"Better then what you did to my men. You're staying locked up this time." James growled as they made their way through, meeting another officer named Aaron Cash. Stopping at the elevator another criminal was brought up, the great green scaly terror, known as Killer Croc.
"I can smell you Batman." Croc growled as he looked down at them while Shinku gripped the Magus Sword, about to slash the giant across the face.
"Move it Croc!" a guard shouted as they electrocuted the scaled man forcing him to walk. As they got on the elevator Shinku kept his eyes on Joker which was noticed by the clown.
"Hey, I don't like guys staring at me like that." Joker laughed as the power stopped and Batman grabbed Jokers throat while Robin had a bird-a-rang out ready to throw while Shinku had the Magus Sword at the Jokers heart "Jumpy aren't we boys?"
"Shut it Joker or might decide to stretch my arm." Shinku growled as the guards and Batman gave him a look.
"Cool it Shinku." Robin ordered as he put away his weapon.
"Very well." Shinku sighed as he sheathed the blade, seeing the guards relax slightly. As they made their way through they soon arrived at the scanners to make sure that no dangerous materials were being snuck in. Soon the scanners went off and a guard said that the heroes had brought the things in.
"Ohh what's you sneak in Bats. Bat-a-rang, Bat Claw, Bat Snacks?" Joker laughed.
"Can I kill him?" Shinku asked as he felt his temples throb.
"No." Batman sighed "Is he always this violent?"
"This is him behaving, be thankful he's asking permission." Robin replied as they reached their final stop, the cell block register where Commissioner Gordon was waiting.
"Busy night, Commissioner?" Batman asked.
"I'll say. The Joker wreaking havoc across Gotham, and a fire at Blackstone, it's a good thing that you managed to catch him." Gordon said as he looked at the three "Good to see you back in Gotham Robin. Who's he?"
"Shinku." Shinku replied as he watched the Joker.
"What's his problem?" Gordon asked.
"He's on edge." Robin sighed "I haven't seen him like this since we were dealing with Trigon."
"Who?" Batman asked.
"A demon. Father of Raven and had possession of Shinku's soul. He was on edge the entire time we were working with him." Robin explained as suddenly Shinku took off at a run. The three turned to see that Joker had broken free and was running down one of the hallways as an electric barrier sealed off the hallway. Not long after Jokers thugs were admitted as Robin and Batman made their way towards him when Shinku held up his hand to stop them.
"Don't. Let me show Joker exactly what he is up against." Shinku grinned as he looked at a monitor that Joker appeared on "Watch carefully clown. By the time my sword hits the ground I will have defeated all of your goons."
"Really? Well let's see you do it." Joker grinned as he ordered his goons to attack as Shinku tossed the Magus Sword, sheathe and all into the air muttering blaze and entering Dragons Flight. Moving in short quick movements he punched or kicked each of the oncoming attackers into a wall or a barrier that knocked them out before they realized what had happened to them. Reaching out he caught the sword as it dropped.
"Tada." Shinku grinned as he looked at Jokers shocked face.
"How on earth did you do that?!" Joker cried out.
"Magic, and lots of talent." Shinku replied "Now how about you surrender before I decide to find you myself."
"Very well. Now let's see you three come after me." Joker replied as he disabled the barrier allowing them to enter.
"You realize that it's a trap." Gordon noted.
"Of course, but Joker put a lot of effort into this, so let's humor him." Shinku grinned as he walked up the ramp following Jokers trail of destruction. As they walked they found one conscious guard who pointed to the lower corridor for them to go down. Once they made their way down they were stopped by two guards who needed help subduing an escaped patient named Victor Zsasz, who was holding another guard hostage and threatened to kill him if anyone came into his line of sight. Batman examined the area while Shinku used his magic to search the area and created a long bow with his magic and aimed it at a wall that would separated them from the room with Zsasz.
"What are you doing?" a guard asked.
"If Batman doesn't have any ideas then I'm going to pump enough of my magic into this arrow to have it blast through the wall and take out Zsasz." Shinku said.
"Wouldn't that kill him?" the other guard asked.
"How many has this one killed?" Shinku retorted which got stern looks from the two caped crusaders.
"Let me handle this." Batman said as he used his grapple hook to climb over the wall and onto a gargoyle in the other room which he leapt off and kicked the murderer in the back forcing him to let go of his hostage as Batman smashed Zsasz's head into the ground knocking him out.
"Not bad Bats." A female voice said from a monitor.
"Who are you?" Batman asked.
"Harley, Harley Quinn." She said as Shinku looked at the monitor and whistled at her.
"Don't let Raven find out you did that." Robin joked.
"Come on, she's hot." Shinku whispered.
"Still, you have a girlfriend." Robin argued.
"I can look, I just can't touch." Shinku retorted as Batman came out of an air duct.
"Are you two done arguing? She has the warden as her captive." Batman remarked.
"Bossy isn't he?" Shinku joked as they made their way through, stopping at the decontamination area to find it was filled with the Joker Toxin. Leaping up above the gas they activated the air system, clearing out the poison as Shinku sighed, looking at the bodies of the dead. They left the room to see that the Joker had sprayed a trail for them to follow, and walking along they were soon in the Secure Treatment Transfer room to see Joker standing atop a metal box with someone in it. The box then broke open from the bottom as a mutant fell out and Shinku suddenly didn't feel well. Feeling his stomach and his second set of eyes pulse he knew what was about to happen.
"Robin! Lock you and Batman in one of those rooms, and contact Raven, I'm going feral!" Shinku shouted as the eyes opened and turned his other eyes red.
"IT'S TIME TO KILL!!!!!!!!" Shinku shouted as his demon portion took over drawing the Magus Sword and rushed the mutant, dragging the tip of the blade on the floor. Swinging the blade he quickly was chopping the creature to pieces and once it was dead he fixed his eyes on Joker.
"COME DOWN AND FIGHT!!!!!!!!!!!!!!!!!" He roared.
"I think I'll pass on that one." Joker muttered "Note to self: Need stronger test subjects."
Before Shinku could do anything else he felt Raven enter his mind and soon stopped moving to try and corrupt her as well. Inside Shinku's mind the forests were ablaze again and Raven floated above the burning trees to see Shinku's demon form standing on one of the floating rocks staring at her.
"Hello my beautiful demoness." It called out.
"Good bye." Raven said as she tried to use her powers to surpress him but he was actually focusing this time and was able to match her power and was slowly drawing out her demon nature.
'This is not good. Soon it will corrupt me.' She thought as she tried to draw out more of her powers but realized that his demon was stronger than her.
"Leave her alone." A voice said as she saw a Shinku in gold land next to the demon.
"Stay out of this Chivalry." The demon spat as more appeared.
"We will not let you harm her." Said one in green.
"We would rather die than let you hurt her." Another in purple said.
"You can't stop us." One in red grinned. Soon the demon was surrounded by dozens of Shinkus and Raven was able to use this distraction to repress the demon before it could do anything else. Once she was finished she withdrew from his mind to see that only ten seconds had passed.
In Arkham Shinku had calmed down enough where he wasn't lusting for carnage. With him returned to sanity Batman and Robin arrived to see the Joker riding the box back to safety.
"Well Bats I'll give you this one chance." Joker said as he stood on the edge of the box "Attack me now and end it all right here!" At this Batman hesitated but Shinku was not as he prepared the Crescent Arc to take out the chains holding the box in the air and send the clown criminal down into the abyss, and his death. Right as he was about to strike Robin tackled him sending the blast off to the side by mere inches causing the Joker to sweat a little at that.
"Well this is good bye for now. Oh and by the way. Officer Boles is working for me, he actually helped me escape." Joker called out as he was transported to safety.
"WHAT THE HELL?!" Shinku shouted "WHY DID YOU STOP ME?!!"
"We don't kill!" Robin shouted back.
"He's right." Batman agreed.
"Like I said when we first met, you are too soft." Shinku growled "You'll never survive if you grant madmen the same rights as normal people."
"Then where does the line stop, how would we be better than them?" Batman asked "We may do horrible things in secret that no normal person would do but what makes us different then the criminals we fight?"
"The fact we protect." Shinku replied "We save those that cannot save themselves." This got a moment of silence out of them before he continued "Tell me, at what point does it become your fault?"
"What?" Batman asked.
"All of the lives that the Joker has taken. He goes on a rampage, killing dozens of innocent people, then you arrest him, he breaks out, and the process repeats itself. At what point do the lives of the dead become your fault?" Shinku asked shocking both of them "Do what you want. I'm going off on my own." Before they could protest Shinku walked off heading for the other building, letting his magic guide him around until he reached the medical facility. Just as he was about to enter it he felt his communicator going off with an alert that his bike was under attack. Warping to his bike he saw the thugs and Batman and Robin arriving to protect their modes of transportation. Shinku unsheathed his blade and began slicing through the thugs, dealing non-fatal wounds to them but disabling them at the same time. Turning back to his bike he activated the auto-pilot and sent it a short ways away from the island.
"Shinku." Robin said as he walked away.
"You two would only slow me down." Shinku replied "I don't know what it is about this place but my demon side is in an uproar and I need to find the source and get rid of it."
"We could go with you." Batman replied.
"No. You have both made it clear that I'm better working alone with this one. Three lone wolves can't work together easily, not without biting each other." Shinku grinned "A race. Let's see which of us can find the Joker first."
"Not before we find the commissioner." Robin retorted.
"Very well. Do what you want, however I am going for the head of the problem." Shinku shrugged as he walked off back to the medical facility dealing with the occasional thug, some carrying guns, which he dodged the bullets or attacked them from afar. He arrived and entered to find that Batman and Robin had already entered. Walking around carefully he arrived at the lower level in time to see Batman and Robin rounding a corner towards him.
"Find anything?" Shinku asked.
"Nothing." Batman grunted as they walked down a hallway passed a dead body. They soon arrived in a large room where Batman used the high tech cowl to find Gordon but he was guarded by Harley Quinn and several guards patrolled the way up to her. Moving carefully Batman and Robin began taking out the guards while Shinku used his magic to sneak up under the floor. Listening to the tapping of her foot he reached through and grabbed her ankles just as Robin leapt down and smashed her in the face with his titanium coated shoes. Once they freed the commissioner they went down to the lowest lab to see that there was a man being drained of some green liquid that was making his demon side angry. They didn't stand there long as soon the flow of the liquid reversed and he began growing in size and strength sending all three of them through a wall, and into the boiler room. The man leapt in who Batman confirmed his identity as Bane. Before any of them could react Shinku handed Robin the Magus Sword and told them to stand back. At that precise moment his demon nature took control and he rushed as the massive muscle bound freak, landing blows that would normally kill a man but to Bane it was just like getting punched or beat up as if he were a regular person and that Shinku's blows were not enhanced. Eventually he had Bane on his stomach as he ripped off the cable and smelled the liquid coming out and growled.
"What is it Shinku?" Robin asked as he finished piling his bodies.
"What is this stuff?" he asked.
"It's called Venom; it's used to make him incredibly powerful. Why?"
"Because whatever it is its primary ingredient is Demonbane, and herb that is poisonous to demons and for those of us half-breeds it will drive us mad and if we are weak then it could kill us." Shinku explained as they left the boiler room to have Bane try to attack you from behind by batman had him rammed into the lake by the Batmobile. They soon sent Commissioner Gordon back to the mainland, to help deal with the bomb threat that the others were using their talents to help.
"Well let's continue searching, shall we?" Shinku asked as he walked towards the rest of the asylum. With a nod the two followed, disturbed by what they had seen.