Author's notes – Hi! Welcome back everyone. Sorry for the long wait between stories. I had a rough year, last year, and this one took me a while. This is the longest PR story I've ever written. "Vigiliante" had more words, but "Saikai" was a larger file, and had an extra page to it.

This is the long-awaited sequel to my Samurai/Mighty Morphin' team-up called "Seito", which I wrote last year. If you haven't read "Seito", you might be confused by a couple of little plot points here, but it isn't required reading. Trust me, I explain everything as we go. The thing is, when I wrote "Seito", I was proud of it, and people liked it. But a few people said that it could've been bigger. I hadn't designed "Seito" to be a full crossover between the two teams ... but the more I thought about it, the more I realised that yeah, there was a lot of potential for an awesome story there. So here we are. This time, everybody is involved. There's full interaction between both teams, there's wild battle scenes, crazy villains ... and because I only wrote 2 zord battles all last year, I promise there will be giant robots. And lots of them.

If you only came into the PR fandom recently, and you're only familiar with the Samurai team, don't worry. Again, I explain everything as we go. You won't be lost. And for the record, if you are unfamiliar with the MMPR kids, then my best advice is to sit back, strap yourselves in, and get ready for a fun ride :). Like "Seito", I understand that the timeline is out of whack, here, and I apologise for that. The MMPR kids would be a lot older than the PRS kids, in official continuity. But ... one of my favourite comic book writers once said that, never let continuity get in the way of a great story. And that's my best advice to everyone reading this. If you've got a great idea, don't worry about continuity, just commit to it, and write something awesome. So the MMPR kids are all about 27, while Jayden is in his early 20s and Mike/Emily are 16/17. In that vein ... yeah, I know that there are powers and giant robots that were destroyed years ago. My thinking was that, it's Power Rangers, and a lot of things happen (and get rebuilt) off-camera.

A little note – I really enjoyed the big-brother/little-brother relationship between Jayden and Mike (notice when Jayden leaves, it's Mike who's the most devastated. In "Samurai Forever" when Jayden says he has a plan that requires them to demorph, Mike's the first one to demorph). But I really wanted them to explore that friendship more, so there's a few moments here when I really focus on that relationship. They were my two favourite characters.

Wow this is a long note. For the time-line? For the MMPR team, this story takes place 10 years after MMPR season 1. In terms of the Samurai kids, this story takes place a day after the episode "Stroke of Fate", and Serrator's just been destroyed. That's where we start. Oh, and finally, "Saikai" is the Japanese word for old friends reuniting. I thought I'd stick with the theme, and that fits the story perfectly. Now, enough of me talking. I hope you guys all enjoy this story. Let's get on with the show!

Prologue

The Shiba house was burning.

An explosion nearby tore Mike out of his dreams. Blinking away the haze of sleep, he gazed around the room and tried to make sense of the nightmare surrounding him. He could hear fire crackling nearby, and wisps of black smoke were just drifting into his room. He sat up, feeling totally lost, when another explosion rocked the house. This one was a lot closer, like it had come from the kitchen. There were shouts and screams on all sides. Some of them sounded human, while most were decidedly not. Throwing his blankets aside, he climbed out of bed and reached for his morpher. A half-second of symbol power later and he was dressed.

Throwing the door open, he found himself face-to-face with a crowd of Moogers.

Mike froze. They were in the house.

That wasn't possible.

The Moogers were just as surprised to see Mike, and he used their second of hesitation to attack. Kicking the closest demon away, he struck out for the Mooger on the left and swung a wild punch for the creature on the right. By now, the demons had recovered from their initial surprise. Without slowing down, Mike fought his way out into the corridor, fending off attacks with every step. But the smoke was thicker here. He took a second to try and gulp in some air, and it cost him. A blow to the chest slammed him back into the wall. Seeing stars, he tried desperately to defend himself. Blocking a low swipe, he swung a sharp right hook, but the Mooger struck away his arm then slammed its boot into his chest, launching him backwards into the air.

He smashed through a wall, tumbling to the ground in the kitchen in a pile of rubble. Dazed, Mike fought to pick himself up. Bleeding and limping badly, he turned to the rest of the house.

The kitchen was gone. The building had been torn apart, and the only walls still standing were burning. Over his head, barely visible through the smoke, he could see the stars. There were dozens of Moogers all around him, clambering through the wreckage as if appearing out of thin air. But none of the gaps around him were glowing. He glanced around fearfully as a crowd of the beasts closed in, when there was a flash of blue light and the Moogers were blasted away from him in a shower of sparks. He smiled as the smoke cleared and Kevin raced to his side, holding his spin sword high and keeping the remaining Moogers at bay.

"Kev!" Mike shouted. "What the hell is going on? How did they get in?"

Kevin shook his head. "I've got no idea," he replied, as the two Rangers stood back-to-back and stared down the circle of Nighlok demons.

"Where is everyone?"

"I don't know," Kevin panted. "I haven't seen anyone. Ji and Antonio were outside working on something when I went to bed. I think Jayden was training with Mia, and…"

Mike's eyes flew wide. "Emily!" he said. But looking past the Moogers, all he could see was smoke and fire. "We need to find Emily!" he continued. "Kev, we have to… we have…" but his voice broke off. The heat from the fire was fading, and he suddenly realised his teeth were chattering. "Kev, is it… are you… cold?"

The Moogers backed away, and the Rangers turned to the hole in the wall, looking outside to see a tall figure approaching the house. Whatever it was, it wasn't human, with cool maroon eyes and a piercing, canine-stare. The demon's helmet and armour were covered in twisted metal spikes like dripping icicles, while Mike could see blue fur on the creature's neck and arms, matted with melting ice. With every step, Mike noticed the fire around the demon dying, a nearby water pipe freezing solid as the demon glided past. But as they watched, the Nighlok turned to face them and pointed a glowing arm towards them.

"Look out!" Kevin shouted. He stepped in front of Mike to protect the younger Ranger, but it was too late. The blast of energy slammed into them, throwing the boys away from each other and smashing Mike back through a wall, where he crashed to a tangled heap in the middle of the dojo. The room was clear of Moogers, and Mike blinked away stars, shivering at the intense burst of cold. Coughing, with every part of him hurting, Mike looked around.

"Kevin?" he shouted, his voice hoarse. "Kevin!"

The doors were suddenly torn apart, and Moogers poured into the room towards him. Trapped and hurt, Mike raised his arms to protect himself as the creatures raised their swords high.

But as their blades flashed towards him, a voice rang out.

"Fire smasher!"

A gigantic red sword swept down over Mike, launching the Moogers away in a clean strike, before a second sweep slammed an entire crowd of them back into the wall. Mike turned from the Moogers to the young man standing behind him.

"Jayden!" he shouted.

Jayden's hair was matted against his face. His clothes were torn and he was bleeding, but he offered Mike a hand and helped the Green Ranger to his feet.

"Are you okay?" Mike asked quickly. On all sides, the Moogers were picking themselves off the floor.

"I'm still standing," Jayden said. "That's all I got. Have you seen the others?"

"Kevin was in the living room, but I don't know where anyone else is," Mike said. He glanced around. Moogers were still pouring into the room, surrounding them and cutting off their escape. They were trapped. "Jayden, what do we do?"

Jayden gazed around helplessly. "I don't know," he admitted.

A dozen Moogers charged towards them, but Jayden smashed them away with a wide swing of the fire smasher.

"Look out!" Mike shouted. Jayden spun around to see energy blasts whistling towards them. Grabbing Mike, he dragged him down behind the sword, using the flat of the blade like a shield and holding the Green Ranger close.

"We have to get the others," Mike said.

Jayden lowered his head. "No," he said. "Mike, there's too many of them. The house is gone. I can hold 'em off for a little while, but…"

"What are you saying?"

Jayden met Mike's gaze. Mike had never before seen that look in Jayden's grey eyes, and hoped he never would again. "Mike, you have to get help. Here," and Jayden held out his hand. With a flash of symbol power, a business card appeared in Jayden's palm, and he gave it to Mike.

Mike glanced over the card. "Youth Centre?" he read.

"You need to go there," Jayden said tersely. "Ask for Jason! Tell him everything, but don't talk to anyone else. Got it?"

"Are you sure? I mean…"

"It's our only hope," Jayden said. "You have to go now!"

"But Jayden, I can't leave you!"

Jayden wrapped his free arm around Mike's shoulder and pulled him close. Mike buried his head in Jayden's chest. Safe for just a second, Jayden kissed Mike lightly on the head. "You have to go, little brother," he said, so softly Mike almost didn't hear him. "Go now. Go!"

Mike leaped to his feet and sprinted for the wall. The Moogers in front of him raised their swords, but were swept aside with a blast of energy. Reaching the wall, Mike turned back to see Jayden in the centre of the room with the fire smasher held high. Jayden nodded and charged into the crowd of Moogers. The Red Ranger's blade flashed through the air, sending Moogers flying with every strike and keeping their attention away from Mike.

At the door, a second towering figure emerged from the smoke. This demon was more terrifying than the first, and Mike tried to shout a warning, but his voice was lost to the battle. The demon's armour was curved and bent like licks of flame. On one side, the metal plates had melted and oozed into each other. He had burning blue eyes and a face of reptilian scales, with a snout that ended in a pair of smoking nostrils over a mouth of jagged red teeth. A haze of intense heat surrounded him, and with every step, the floor burned beneath him. Mike's blood ran cold as the demon spotted him, and the Nighlok held out his arms, channelling a firestorm into his armoured fists before slamming them together. Mike dived through the wall to safety as the dojo lit up behind him.

Rolling to his feet, Mike ran for the front gates without looking back. Reaching the street, he kept going, soon disappearing into the shadows as the dancing flames lit up the night sky behind him.

To be continued.