Disclaimer: I do not own Ronin Warriors or Sailor Moon, if I did, we would have had an official crossover a long time ago...
The battle against Talpa was over, Kayura and the Warlords withdrew to the Dynasty's Realm, leaving the Ronin Warriors as custodians of the Earth. Even as they tried to resume their normal lives, enrolling in school and trying to do normal teenage boy things Ryo still felt uneasy. Something gnawed at the edge of his mind. He could feel another fight brewing but it was nebulous, he could perceive the danger but it didn't seem to materialize. He knew that the other Ronins would think him paranoid if he brought it up so he was on his own for intel gathering for the time being. His instincts led him to the Hikawa Shrine.
"Why here?" he thought, "It's just a shrine... I seriously doubt anything sinister is going on here..."
Ryo Sanada was never the spiritual type but today he decided to pray for good fortune. As he passed by the shrine maiden and her friends, he could feel their eyes upon him. They were all staring, it made him suddenly feel self-conscious.
"Excuse me, ladies... I'll be outta' here in a minute..." he stated, trying his best to be polite.
He did get an odd feeling from those girls and the two cats hanging around them but he ignored it. As he concluded his prayer, he clapped twice and began to leave. Passing by the girls again made him nervous, he could feel them still staring at him. Now he could tell why mere girls made him so nervous, each of these five girls held some kind of power, he could feel it. This was far more tangible than the feeling of danger he was getting before. Whoever these girls were, they were indeed powerful, rivaling him and the other Ronin Warriors for sure.
"What to do?" he thought, "Obviously keeping an eye on these girls is prudent but I'm outnumbered here, so I can't risk their wrath... I'll pretend to leave, then sneak back into the temple grounds and listen in on their conversation... I don't like eavesdropping but it might give me some clues."
He passed by them, hoping none of them would try talking to him. That hope went out the window when the one with long blonde hair and a red ribbon in her hair approached him. She had a gentle smile across her face and her blue eyes seemed to sparkle in the sunlight.
"Here, you dropped this on your way in..." she stated. Handing him a book that he hadn't noticed had fallen out of his bag.
"Uhm... Th-thanks..." he replied. He took the book from her and hoped she didn't notice his face flushed bright red. "S-sorry to bother you, I'll-I'll be on my way...!" he stammered quickly.
With that he left the shrine in haste, almost forgetting the plan he'd formed in his mind. He hated this but he decided to shed his civilian clothes for his under-armor. That meant that he'd have to buy a new school uniform. Thankfully, no one going in or out of the shrine had noticed him slip back in. And he continued to go unnoticed as he approached the spot the girls were chatting while hidden in the temple ground's abundant brush. The talking cats caught him by surprise but he maintained his silence and kept listening. He heard terms unfamiliar to him; "Queen Beryl, Zoisite, Silver Emperion Crystal, Negaverse".
"This Silver Emperion Crystal seems important, maybe I should try to get my hands on it..." he thought, "Wait, scratch that, those girls already have it..."
Shaking himself from that thought, he realized that one of those talking cats had noticed him. The white one who spoke with a raspy male voice. He knew if he moved now that they would see the bushes rustling but if he didn't, he'd be caught anyway. Retreat was his only option at this point. Sure enough, they noticed the bushes rustling and had caught sight of his back as he took off. Scaling the temple walls and jumping across rooftops to get away, he hoped they wouldn't be able to follow him. He ducked into an alleyway and hoped they wouldn't find him, he dug into his backpack for a change of clothes only to facepalm when he realized he hadn't packed a change of clothes that day.
He was about to call for pickup from Kento or Sage when he heard something.
"There you are!" a female voice called.
One of the girls from before. The brunette with her hair tied back, she had a mean look in her eyes. The alleyway was tight and dead-ended. He could possibly take one of these girls but something told him that he still didn't want to. So instead he chose to keep running. In the end, it didn't help. He ended up cornered by the same girl he'd gotten an up-close encounter with earlier in a construction yard.
"Venus Star Power!" she shouted.
Before his eyes, she transformed into something he hadn't seen before but it was as though that power he'd felt before was packed into a jar far too small to hold it all and she'd just taken off the lid. This was going to be a fight after all and reluctantly he relented to that fact.
"Armor of Wildfire! Tao Jin!" he shouted.
By the look on her face, he knew she hadn't expected him to transform either. Hopefully, she hadn't had a good look at his face after cornering him. He kept his distance and kept on the defensive, looking for a way to end the fight without seriously hurting this "Sailor Venus" as she called herself. He hadn't paid attention to her whole spiel but if what she had said was true, they would end up on the same side. He deflected another "Crescent Beam" with his swords, she sure wasn't making this easy for him. A break came in the fighting when that same white cat from before halted her attack.
"Wait! Are you a Ronin Warrior?! Ho-hoh! Are we in luck!" he exclaimed, "Cool it, Sailor Venus, this guy's no enemy... In fact, quite the opposite, he's a friend..."
"But he was spying on us...!" she argued.
"I'm sure he has his reasons, don'tcha' big fella'?" the cat replied.
"Uh sure..." Ryo replied.
"Luna's gonna' love this!" the white cat stated ecstatically.
"Care to explain, Artemis?" Venus asked impatiently.
"Back when the Silver Moon Civilization fell, we did have help from Earth in the form of a group who called themselves the Ronin Warriors. We never got their names but we did hear the names of their armors; Wildfire, Hardrock, Strata, Halo, and Torrent. This guy is wearing the armor of Wildfire," the cat continued to explain.
Ryo sheathed his swords.
"We're lucky! I didn't expect to find a Ronin Warrior! Just as lucky he doesn't seem to wanna' fight us..." the cat stated.
"Why is that?" she asked.
"The Ronin Warriors are powerful, really powerful! As in, the whole negaverse shakin' in their boots powerful!" the cat continued.
She'd let her guard down too soon. Something evil was about to get the jump on her. He jumped in pushing her out of the way and blocking the attack. A strange person had tried to attack Sailor Venus from behind. He could sense the evil intent of this person.
"Foolish little boy, getting in my way!" the stranger groused.
"I dunno' who you are but you're clearly an enemy!" Ryo declared.
"Trying to play hero, are we...?! I'll put you in the ground!" he shouted back.
"You've got that backwards...! Flare Up Now!" he shouted. Attempting his attack against this newcomer.
The evil stranger escaped before the Flare could destroy him and Ryo turned his attention to the girl.
"Hey! Are you ok?" he asked in a panic.
"Y-yeah... You-you saved me... Even after I attacked you..." she stated, surprised by this turn of events.
No doubt about it now, she could see his face. He regretted retracting the mask built into the helmet because now she could clearly see his face.
"Hey! You're that guy from the temple!" she declared.
Ryo wanted to leave as quickly as he could, especially when the other girls arrived. The two talking cats managed to calm these "Sailor Scouts" down upon seeing him. He felt awkward, being a subject of conversation as if he weren't there but didn't feel right about interjecting.
"Why were you spying on us!?" Jupiter asked accusingly.
"Because I don't know what's going on...!" he replied, "I know something is, but I dunno' what!"
"Well, that won't do at all...!" the black cat stated.
Luna, as she introduced herself, proceeded to explain about the Sailor Scouts' mission and filled in the gaps for him.
"Will you bring the other Ronin Warriors to meet with us at the temple tomorrow?" she asked.
"I'll do my best but those guys can be stubborn..." he affirmed.
The next day, Ryo had managed to convince the other Ronins to join him at the shrine. With the Sailor Scouts already there. Introductions were brief and the explanation from Luna was long-winded.
"So these negaverse jerks took your friend and brainwashed him...?" Kento started, "Well don't you worry 'bout it! You can count on ol' Hardrock whenever ya' need me!"
"Suppose I could pitch in... Not keen on fighting another world-ending evil after beatin' Talpa but nothin' for it, I guess..." Cye relented with a sigh.
Rowen and Sage exchanged looks and silently relented on the matter.
"Losin' Tuxedo Mask was a huge blow, but with the Ronin Warriors on our side, maybe our luck's turnin' around...!" Artemis stated enthusiastically.
"We can certainly hope, Artemis..." Luna replied.
"Don'cha' worry Serena! We'll get yer boyfriend back! Even if I gotta' punch him back to his senses!" Kento laughed.
"Oh yeah, Kento, that'll work for sure..." Cye replied sarcastically, rolling his eyes.
"Aaanyway, now that we're all buddy-buddy... Who's up for pizza? I'm starvin'!" Kento declared.
"Ooh! Pizza sounds good! And ice cream!" Serena continued.
"Yeah! Ice cream!" the former cheered.
"Oh dear..." Luna sighed.