She turned to the Titans who were all looking at her. Before Kat could say anything, Robin said, "I know, we never asked, right?"

"Bingo, Boy Blunder!" Kat snapped her fingers.

"Please don't call me that," Robin groaned as the others laughed.

Episode 4: Unison

Later, the Knight twins and the Titans returned to the Tower. The twins parked their bikes inside the garage and dismounted from them. Robin dismounted from his R-Cycle as the others filed out of the T-Car.

"Sorry I didn't tell you," Kat apologized. "But you never really asked."

Raven glared, "Not an excuse to withhold information."

"Whatever." Kat snorted.

"Okay," Robin began, "Time for some answers."

The twins looked to each other and sighed. Leo said, "True, we've kept you all in the dark long enough."

"We'll tell you everything we know, but only what we know, deal?" Kat added as she extended her hand. Robin took it and shook.

"Deal," Robin said.

"To the Common Room then?"

Up in the Common Room, the Titans sat around the two teenage twin Knights as they began their story. They would tell the Titans all they knew of their powers, the cards, the Beast Spirits and the armor and buckles.

"Where to begin?" Kat said as she scratched the bridge of her nose.

"I think the beginning would be a good place to start," Raven said with crossed arms.

"Yes," Kat nodded in agreement and told them, "It began about a couple of years ago. A team of archeologists were investigating some ancient ruins buried outside the city of Tokyo. The project was being funded by a big corporation." She then gave the Titans even looks, "And, no, I can't tell you what that corporation is. That's Top Secret." She continued, "The archeologists discovered a tomb and then discovered a hidden chamber with these stone tablets with images of monsters on them."

"The Beast Spirits," Robin surmised.

Kat nodded, "Got it in one."

"These archeologists wanted to study the tablets," Leo continued, "However, by doing so, they accidentally undid the seal on them and released the Beast Spirits." He sighed sadly, "No one survived the Beast Spirits' wrath." The Titans gasped.

"That is horrible!" Starfire stated.

Kat continued, "Of course. The corporation got wind of it and investigated the site and salvaged whatever they could. In the chamber, only a video camera, a tape recorder, notes and 4 still sealed Beast Spirit tablet were left. The video camera and tape recorder revealed the existence of the Beast Spirits and clues on what they were. The notes explained an old legend. The 4 remaining tablets…" she reached into her pocket and her brother did the same and pulled out their Change Ace cards. "…Became our Category Ace transformation cards."

The Titans looked at the cards in their hands. Their eyes went wide.

"Mine is Suzaku: Red Phoenix of the South," Kat explained.

"Mine is Seiryu: Blue Dragon of the East," Leo explained.

"The corporation knew that the Beast Spirits needed to be sealed again and developed the Advent System based on translations of the writings in the chamber that were in the notes. Their Research and Development team created 4 unique suits of armor and weapons to combat and seal the Beast Spirits," Kat continued.

Leo added, "For some reason, Kat and I were both picked by the mysterious corporation to seal the Beast Spirits. I don't know why and how, but I knew that it was…" he pointed to the ceiling, "Destiny," he spoke sagely.

Kat rolled her eyes and then said. "We were both surprised to be the ones chosen to become Advent Knights. I mean, we didn't know what was going on. Leo was braver than me and used his Advent System and Change Seiryu card first to fight a Beast Spirit. It took me a few days to wrap my mind around the whole idea before I tried it out." She finished, "Now, we're responsible with sealing the Beast Spirits away using the Rouge Cards to do so."

The Titans listened with inventiveness. This time Beast Boy raised his arm. "Hai?" Leo coaxed.

"Why cards?" Beast Boy asked.

"Because stone tablets are too heavy to carry," Leo answered a-matter-of-factly. "The Rouge Cards were made to possess the same sealing properties the tablets had that originally had the Beast Spirits inside."

"How do you use those cards to transform?" was Robin's question. This was the part Leo and Kat wanted to avoid.

Kat answered for them both, "I don't know a lot of the technical lingo about the Advent System, but the System allows us to transform by…" She took in a deep breath, "By fusing…with the Category Ace Beast Spirits."

"What?" Robin's eyes widened. So did Raven's.

"You fused yourselves…with monsters?" Raven questioned. "Willingly?"

"It allows the transformation and the usage of the suits and weapons via the fusion of our DNA and Beast Spirit DNA," Leo said. He then said philosophically, "To combat our foes, we must first become our foes."

"So that explains your powers, huh?" Cyborg asked. The other Titans turned their attention to him. "While the two of you were fighting that Beast Spirit, I was taking readings. The energy you give off in your transformed states is the same as the energy that you usually give off, just stronger."

"Yeah," Kat ran a hand through her hair. "It's a side effect of the fusion." She snapped her fingers and a small flame appeared.

"We actually gain the elemental abilities of the Category Ace Beast Spirits and are able to use them in human form," Leo explained. He stated, "I possess power over wind and electricity. I can also generate the latter from my body."

Kat stated, "And I can generate and control fire and ice."

Starfire asked, "Does this…fusion…hurt?"

"At first," Kat answered honestly, "But we got used to it."

"The body needed to get used to the mixed DNA," Leo added. "I had to train myself constantly to get used to the effects of pre and post fusion. It wasn't easy, mind you."

"So any other questions?" Kat asked.

Robin asked, "You said there were 4 suits, right?"

"That's right," Leo said, nodding.

"So, who are the other two Advent Knights?"

Kat said, sticking up a finger, "That, my dear Robin…is a secret."

Robin leaned back on the sofa and exclaimed, "Oh, come on!"

"My onee-chan is right, Robin-san," Leo said. "We are not at liberty to give out that information."

Kat then said, "After all, we all have our secrets, right?" She grinned. Robin nodded. Even he had his secrets so Kat and Leo had a right to theirs.

"Just…" Robin began, "Just promise to tell us if there's anything important. Maybe we can help you seal these Beast Spirits."

Kat and Leo stood up. Leo bowed. He said, "Yes, that would be nice. But sealing the Beast Spirits is our duty."

"But thanks for the offer, and help, though," Kat said with a smile. She turned to her brother, "Ikuzo, otouto-chan."

"Hai, onee-chan."

The twins began to walk away, but was then stopped by the Titans. "What now?" Kat groaned. Robin then handed her…a communicator?

"What's this?" she stared at it.

"Just a token of appreciation," Robin answered. "Consider yourself an honorary Titan too."

"Arigatou," she smiled and pocketed the device.

"We should be off now," Leo said, "Thank you for the hospitality."

"We'll keep in touch," Kat gave them a two finger salute. "Ja ne!"

(Later that night)

In the forest nearby, a group of campers were under attack by strange creature. It was black and green with whitish fur around its neck and chest area. It also had a pair of moth-like wings and appeared to be humanoid in appearance with features of a moth. It spilled its dust all over them. The campers made the big mistake of inhaling the dust and were poisoned. They fell to the grassy forest floor as the creature moved on.

At the same time, the local power plant was being attacked as well. The workers backed away from a humanoid brown and black creature that resembled a deer. It grunted and then sent electricity flying everywhere from its antlers. The workers ran, but the unlucky ones fell to a shocking demise. The creature walked around the place looking for new victims.

(Titans Tower)

The alarms blared and the Titans woke up with a start. They rushed out of their rooms and went to the monitor, barely awake. Robin said two words: "Titans, trouble."

(Café La Salle)

In the twins' shared bedroom upstairs, Leo and Kat woke up with a start as their cell phones/Beast Spirit detectors rang. They looked at the phones and turned to look at each other.

"Let's go," Kat said. Leo nodded.

(The Forest)

Raven and Starfire were sent to investigate the nearby woods. After exploring, they found the unlucky victims. Starfire gasped and Raven checked for a pulse. Nothing. She shook her head solemnly.

"We're too late, Starfire," Raven said sadly.

"These poor people," Starfire whimpered, nearly close to tears. The sound of a motorcycle racing into the scene diverted their attention from the crime scene. Riding upon her red and black motorcycle was none other than Kat Hasuma herself, the Knight of Suzalu who called herself Mimic.

Kat stopped and got off her bike. She took off her helmet. She was dressed in black jeans, a red tank top and black leather jacket. She also had on her trademark boots on her feet and bow in her hair. She grimaced as she looked at the scene. She clasped her hands together and prayed for them before turning to Starfire and Raven.

"What are you doing here?" Kat asked.

"We were about to ask you the same thing," Raven retorted.

Starfire could feel the tense atmosphere and decided to play mediator. "Oh, how joyous it is to see you, friend Kat!"

"Pleasure's all mine," Kat smiled. She looked at the bodies and kneeled down.

"I don't think you should disturb the bodies," Raven warned. "What are you doing?"

"Looking for something," Kat's eyes narrowed. "Got it." She rubbed her gloved finger over a canteen and stared at the dust, "Poison." She stood up and said, "Looks like there's a Beast Spirit here." She looked at the Titan girls. "Well, you might as well help me while you're here."

"It would be our honor," Starfire said happily.

"Speak for yourself," Raven grumbled.

The T-Car and R-Cycle pulled up in front of the power plant. Robin dismounted from his bike as Beast Boy and Cyborg exited the T-Car.

"Got anything, Cy?" Robin asked.

"No signs of life in there, Robin," Cyborg said grimly. "Not good."

"Maybe it's empty," Beast Boy said positively.

"Or that they're dead," Robin said. Beast Boy's face fell. His ears then perked up when he heard the sound of a motorcycle approaching. Using his animalistic eyes, he spotted Leo as he rode into the scene on his blue and silver bike. "Leo!" he called. Robin and Cyborg turned to where Beast Boy was pointing to.

Leo stopped his bike, hopped off and took off his helmet. His hair was still braided and messy and he was wearing a black jacket and slacks with a blue Chinese shirt under the jacket and a white scarf around his neck. He still had on his head his trademark goggles, which were now blue.

"Ohayo," Leo said. The greeting would seem out of place in the dark, but it was already after 3 am so it was morning. "So, what's going on?"

"Don't know yet," Robin said. "We have to go in and investigate."

"May I help?"

"Sure." Robin suggested, "We should split up. Beast Boy, you go with Leo. Cyborg and I will investigate together."

Beast Boy saluted, "Gotcha, Robin."

"You have a flashlight?" Cyborg asked Leo. He opened a compartment in his chest. "I got spares."

"I'm good," Leo said as he pushed a button on his goggles and they released light. "Comes in handy in dark places."

"Let's go team," Robin led them in. Then he asked Leo, "By the way, what brings you here?"

Leo revealed his cell phone, "Beast Spirit alert. I got the signal from here. Maybe a Beast Spirit is here and I'm going to seal it."

Back in the forest, which was eerie and creepy in the middle of the night, the girls continued to search for the alleged Beast Spirit. Kat took this time to talk to Raven.

"You don't trust me, do you?" she asked.

"I don't know you that well," Raven retorted. "Plus you purposely withhold information. It's hard to build trust on that."

"I see," Kat nodded. "You have trust issues or something?"

Raven glared, "It's just that you and your brother suddenly show up and suddenly have weapons to beat these Beast Spirits is way too convenient. That and you didn't say who you were working for."

"No one," Kat answered simply.

"Bull."

"Believe what you want, Raven-chan," Kat said affectionately. "But me and my otouto-chan have a mission and we'll do anything to complete it."

"Anything?" Raven wanted to know what Kat had meant by that.

There was a tense silence as Kat wouldn't give a retort. Starfire was still hovering obliviously in front of them. She turned to her two friends and grabbed them by the arm. "We must hurry!" she insisted. "This Beast Spirit may have escaped by now."

"If it even is a Beast Spirit," Raven mumbled.

"It is," Kat winked. "Trust me." Raven narrowed her eyes.

Back at the power plant, the boys had split up. As promised, Beast Boy was with Leo while Robin was with Cyborg. Right now, Beast Boy and Leo were walking side by side. The goggles on Leo's head were functioning as their light source since they could also double as flashlights or torches. Leo was holding his cell phone and trying to detect a Beast Spirit (If it was a Beast Spirit and if it was there). So far, he had nothing.

"You sure this could be a Beast Spirit?" Beast Boy asked.

"Hai, the detector is never wrong," Leo responded. He looked down at the screen on his cell phone, "I just don't know what's going on."

"Well, we better find what and who did this," Beast Boy suggested. "Robin freaked out when he saw those dead workers. Poor guys."

"My condolences to their families," Leo said solemnly and sincerely. He then saw Beast Boy looking at him like he was going to ask something. "Sumimasen?"

"Huh? What did you say?"

"Gomen, but it looked like you wanted to ask me something."

"…" Beast Boy spoke up, "So how did you and your sis end up being picked for this?"

"Becoming Advent Knights?" Beast Boy nodded and Leo shrugged. "I'm not sure. All I know is that it must've been fate." Suddenly, his phone began beeping. He looked down on it. "A Beast Spirit has been detected, and it's close by!"

Kat's phone was beeping loudly. She grinned. "A Beast Spirit has been detected. Girls, let's follow the signal!" She ran ahead of the two Titan girls.

"Yes, we must!" Starfire chimed in as she flew after Kat. Raven shook her head and followed last.

When Beast Boy and Leo found the Beast Spirit, they also found Robin and Cyborg fighting it. The creature was holding a pair of antler-like swords and using them to unleash electricity at both the Boy Wonder and bionic teen.

Beast Boy charged and immediately took on the form of a, well, deer to stampede into the Deer Beast Spirit and pierce it with his long antlers. Leo already had his buckle on and slid in the Change Seiryu card.

"Henshin!"

"CHANGE SEIRYU!"

Draco drew his Seiryu Blade/Dragon Fang and slashed down on its chest and sent it flying into some machinery. Robin and Cyborg looked at him and Beast Boy in appreciation.

"Glad you could make it," the former sidekick of Batman said as he gripped his Bo staff.

"Glad to be here," was Draco's response.

"Let's kick some ass," Cyborg said as he cocked his sonic cannon.

Beast Boy morphed into a bear and roared.

"TITANS! GO!" Robin shouted.

"There it is!" Kat pointed as she slid the Change Suzaku card into her buckle and immediately transformed.

"Henshin!"

"CHANGE SUZAKU!"

Starfire and Raven saw Kat brandishing her Suzaku Arrow and using it to fight the Moth Beast Spirit, who was using its claws to block and counter each and every one of Mimic's swings and strikes.

Starfire flew into the air and immediately unleashed her barrage of starbolts as she yelled out her battle-cry. Raven hovered not too far away and with her magic words of, "Azarath Metrion Zinthos!" uprooted some of the trees and used them as clubs to swing at the Moth Beast Spirit. It flew into the air to avoid their attacks.

Mimic looked up and outstretched her hands after banishing her Suzaku Arrow. Holding both arms up, she fired ice blasts and fireballs at the Beast Spirit. It flew around to dodge.

"Chikusho!" Mimic swore.

Raven chanted again and fired several small dark energy blades at the Beast Spirit. Folding its wings in front of itself, the blades bounced back towards Raven. Raven was shocked and dodged to the side.

Starfire blasted at it with her starbolts, but it too did the same thing and her blasts went back to her. With a shocked, "Eek!" she flew away just in time to evade it.

"It's reflecting all our attacks!" Raven analyzed.

"How will we defeat it?" Starfire questioned.

The thing then flapped its wings and sent its toxic dust at the stuff. It was heading for Raven. Thinking fast, Mimic jumped up and created a wall of fire to protect her.

"You…saved me?" Raven said, shocked. Mimic nodded.

Mimic was thinking. So far, the Moth Beast Spirit had been reflecting Raven and Starfire's attacks, but none of hers. She then snapped her fingers as the light bulb in her head lit up.

Fire and ice!

She had to hold that Beast Spirit steady and still and she had just the card to do it. Reaching down to the rectangular card holder attached to her belt, she drew a card.

"Time to put this thing to the test."

Meanwhile, the boys were having trouble with the Deer Beast Spirit as it fought against them. Robin dodged out of the way of a lightning bolt it fired at him. Beast Boy, as a buffalo, charged at it. It raised its antler blades and interlocked them with his horns. It then shocked him and kicked him away. Beast Boy, in human form, and smoking groaned.

Draco drew a card from his sword and slashed it through. "BEAT!" he charged and his punch rammed into the Deer Beast Spirit's chest. It glared at him and unleashed a lightning blast. Draco, smiling, countered with his own electrical abilities. The electricity mixed together as they tried to dominate one another.

Robin drew out some birdarangs and threw them at the back of the Deer Beast Spirit's head. They struck and exploded. The Deer Beast Spirit, disoriented, was then shoulder tackled by Cyborg and a Beast Boy in gorilla form. It smashed into the wall. Draco used his powers over the wind to raise it up and pummel it onto the ground over and over again before blowing it away.

"Time to finish this," Draco said as he spread out his cards and found the one he was looking for: Kick Locust.

Mimic summoned her bow blade (Suzaku Arrow) and attached her card reader to it before slashing the card through.

"VINE!"

Draco slashed the card through.

"KICK!"

Vines unleashed themselves from her weapon and ensnared the Moth Beast Spirit. Mimic grinned victoriously as it was immobilized. Tilting her head to the girls, she shouted, "NOW! HIT HIM HARD!"

Starfire and Raven complied and used their starbolts and dark blasts upon it. It got struck hard in the head and was defeated. Mimic called back the vines and watched as the Moth Beast Spirit fell to the ground, hard.

The Knight of Suzaku drew a Blank card. "Now, time to seal you."

Draco jumped up and performed a flying kick, charged up by the card as well as by his wind and electrical powers. The kick struck and sent the Deer Beast Spirit flying and crashing into some crates. Standing over it victoriously, Draco held a Blank card.

Draco spoke, "With this card, in the name of the Dragon, be sealed!"

Split screen effect: Both Draco and Mimic threw their Blank cards at the same time and they stuck to the heads of the defeated Beast Spirits. The cards sucked in the Beast Spirits and flew back to their owners' hands.

"Reflect Moth," Mimic mused as she looked at the card. Starfire cheered victoriously and Raven cracked one of her rare smiles.

"We are victorious!" Starfire swept Mimic in a hug.

"Starfire…my armor is cracking…"

"I shall be the man that will slash a path into his future with his blade," Draco mused as he too looked at the card. "Thunder Deer? Highly redundant, but might be useful." He turned to the Titans and bowed, "Domo Arigatou. Thank you for your help."

"No problem," Robin said.

"What are friends for?" Beast Boy added.

"We have your back, dawg," Cyborg grinned.

Leo undid the transformation and said, "Well, it's getting late. I should be going home now."

"Not so fast, Leo," Robin stopped him.

"Sumimasen?" Leo asked.

"Maybe you should crash with us tonight. We've got plenty of room for you and your sister."

Leo seemed to be thinking, "Hm…maybe…Arigatou. Thanks for the invitation."

"So, you trust me now?" Kat asked hopefully to Raven.

"You're getting there," Raven said.

Kat smiled.

"Come friends let us return to the Tower for some late night 'girl talk'!" Starfire said excitedly. Raven groaned.

ZK Chromedragozoid: Now that that's over and done with, I want to say a few things. First off: How was the drama and all the facts? Now you know what the Beast Spirits are. But, what is the mysterious corporation that gave Leo and Kat their powers? Anyway, stay tune and please Read and Review.

Okay, cards so far that Leo and Kat have that have been seen.

Leo Narukawa/Advent Knight Draco

Ace of Spades: Change Seiryu

2 of Spades: Slash Lizard

3 of Spades: Beat Lion (Sealed in Episode 1)

4 of Spades: Tackle Boar

5 of Spades: Kick Locust (Sealed in Episode 2)

6 of Spades: Thunder Deer (Sealed in Episode 4)

Kat Hasuma/Advent Knight Mimic

Ace of Hearts: Change Suzaku

3 of Hearts: Chop Head

6 of Hearts: Tornado Hawk

7 of Hearts: Vine Plant (Sealed in Episode 3)

8 of Hearts: Reflect Moth (Sealed in Episode 4)

Preview to next chap: Raven goes to a new Goth bookstore that has just opened and meets a teen with blue hair and dressed ALL in black with his eyes hidden behind a pair of shades. Intrigued, she follows after him only to encounter a wild Beast Spirit. She is then saved by a mysterious benefactor. Legend Knight of Genbu: Shadow makes his first appearance.