This is my first fanfic ever, so please be gentle. I love criticism, but only if it's actually constructive.

"…"- Thoughts or Flashbacks

-100 Years before Present Day-

Night had fallen over the Demon World, and the cliff where Yoko Kurama and his thievery gang rested was shrouded in mist to hide their position. The kitsune was feeling particularly satisfied with himself after a pulling a heist on a very rare item, so he was relaxing from his tiring day. He was lying on his back against the rough, rocky landscape with his silver furry ears laid back in an "I'm not worried" position. Of course, he had a plan in case of attack, but Yoko preferred to believe he wouldn't need it.

Unbeknownst to Yoko, there was some creeping up on him there was a force creeping up on him at the moment.

"Yoko!" a high-pitched voice called. A light-skinned girl had appeared in front of the thief, taking advantage of his peace. The girl was tall and slender. Her long, black hair fell to her waist and atop her head, two pointed clouded leopard ears were perked up in excitement. She stood perched over the fox with an enormous smile on her face.

"Did I surprise you? Did I finally win the bet?" she questioned. Yoko looked dazed before yawning and telling her,

"No, I'm afraid not my dear. Sei, you are really dreadful at surprising people. The bet says you have to make me flinch, actually, and then you'll get what you want." He sat up and motioned for Sei to sit down beside him. She complied with a sigh.

"Damn it, I thought I had you that time," she remarked. Normally Yoko would not have tolerated this kind of annoyance, but Sei was a special case. As his mate, she had access to most privileges concerning his patience. He smiled slyly, leaned over and planted a small kiss on her cheek. Warmth filled his eyes.

"I know I'm cold to everyone, but know that you bring out my more civil side, rather, you materialize it with your presence," he told her in a rare gentle voice.

"Social issues are such a bother. We're thieves, why should we engage in the pleasantries of society?" Sei asked, her spotted tail swinging behind her.

"It's effective to forge bonds as to get closer to the prize."

"Fine."

Off in the distance, the feline demons heard muffled yells and sounds of weapons clashing. The warmth was gone from Yoko Kurama. He abruptly stood up. Hid ears swiveled, trying to here sounds of the battlefield. Finally, he sighed and stated, "The battlefield is at camp. Something's attacking." He held out his calloused hand to help the leopard demon stand. She grasped it and was pulled up.

"C'mon then! Let's go help those weaklings," Sei said excitedly, her green eyes lighting up. Yoko chuckled.

"I knew there was a reason I made you one of my high-ranking advisors," he said jokingly. With that, the pair sprinted off to the direction of camp.

Upon arrival at camp, Yoko Kurama and Sei found it decimated, with bodies lying everywhere. They couldn't believe their eyes. Their whole troupe was gone, though the gang was very strong. As the feline demons took in the damage, a malevolent presence lurked behind them. As soon as their guards were down, a blade pierced the silver fox man through. He fell to his knees from the shock. Sei whirled around and engaged the mysterious attacker. After a minute, Yoko stood up and also engaged their guest. Both demons had claws out and were furiously slashing at the figure. Ten minutes later, the demons were breathing heavily and were covered in wounds.

Forgetting their pride for the time being, they fled. The attacker pursued them. Along the way, Sei and Yoko were separated and no matter how much they tried, could not find their way back to each other. Sei stopped for a short breather. The attacker was no longer following them, but her wounds were aching.

"Yoko…" she whispered. "Are you okay?" she said to herself. Five miles way, Yoko had already collapsed from his injuries. Sei and Yoko Kurama never found each again.

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-Present Day-

Shuichi Minamino woke with a start, covered in cold sweat. He once again had dreamt of the fateful night where he and his mate saw each other for the last time. Shuichi (Kurama) sat up in bed; he had school tomorrow and had no time to be dwelling on the past. He wasn't even sure where Sei was now, 100 years later. Perhaps she had died, or was arrested for his thievery. He didn't really know.

Mentally shrugging it off, she turned his head and looked at the alarm clock beside his bed. "6:00 AM" it read.

Might as well get up now. Not like I'm going to get anymore sleep tonight. Kurama dragged himself out of bed and got ready for school slowly and methodically. He jogged downstairs to the kitchen where his mother was waiting for him.

"Morning Shuichi," she said cheerfully. She was cooking eggs on the stove for her son and herself.

"Good Morning Mother," Kurama said respectfully. After his mother's illness had subsided, he had made a note in the back of his mind to be even more respectful to his mother. Even legendary demon thieves had to suck up sometime.

"Your friends called earlier. Something about a meeting after school. I'm assuming you know what that's about," she said casually. The eggs were done and she scooped them onto a plate for the demon to eat. Her son nodded and picked up the plate of eggs and began to eat them.

An hour later, Kurama was sitting at his desk in his classroom, boredly watching the other students mingle. He had let his own friends go check over the homework without him, so he was simply waiting for class to start.

The door slid open. The elderly teacher entered with bundle of fliers in his hand.

"Stand and bow," he commanded.

The students obeyed as was custom.

"Good, sit," he said. There was much shuffling of desks as the teenagers sat down and got out all of their class materials.

"Before you all get comfortable, we have a transfer student joining us today. Oikawa-san, you may enter now," the teacher told them. A bouncy looking girl entered the room and stood in front of the class to introduce herself.

"Hello, I am Oikawa Sei. I transferred from Tono. I would love to make friends with you guys," Sei said, restraining the joy in her voice. Kurama flinched. Her name is Sei. She even looks similar to my Sei. Why on the day I dreamt about that night? The teacher scanned the room.

"Oikawa-san, go sit next to Minamino Shuichi, he'll help you out." She teacher pointed to an empty desk beside Kurama's own desk.

"Hi!" Sei told Kurama as she came over to the desk and sat down. He sighed. This was going to be a long day.

The day went by fairly quickly considering Sei's constant talking. Before long it was the end of the day and Kurama couldn't even go home. Picking up his belongings, Kurama started his trek to Urameshi Yusuke's apartment. However, before he could get out of the gate, he was ambushed by Sei.

"Hi Minamino-kun!" she said cheerfully, despite the clearly visible look of irritation on her companion's face. This Sei even acted like his Sei. Then, he could shut her up with a kiss or something of the like, but now, he couldn't do a damn thing.

Still, he had a feeling of familiarity when with her. His Sei was probably dead, and she reminded him of his mate, so it was natural.

"Hey Minamino-kun, I feel like I know you from somewhere. Do you recognize me from anywhere?"

Kurama shook his head. "Sorry, you feel kind of familiar as well, but I can't seem to place it."

"Oh." Sei looked crestfallen. At last! A moment of quiet!

Unfortunately for Kurama, his reverie was interrupted by two girls approaching him. When they reached him, they both bowed and one said, "Minamino-kun, we've both liked you for a long time, will you please go out with one of us?" Kurama looked thoughtful. Turning on the nice guy act, he told them, "I'm sorry, but I already have a girlfriend. She disappeared a long time ago, but I'm still waiting for her."

Honestly, he hadn't even lied. Kurama really was going to wait for Sei forever. He just couldn't fall in love with anyone else, no matter how hard he tried.

"Oh. We're sorry, how long has she been gone, if I'm not too rude?" the one that had stayed silent before asked.

"It feels like its been a hundred years…" Kurama replied. Sei gasped. The plant-wielder turned to her in an instant.

"Is that bad?" he pressed.

"No, I'm just in the same situation as you really…" she dithered. "I've got to go…" she whispered. Following the statement, she sprinted out of the gate as fast as she could.

Kurama was left with the two confessing girls. He slung his backpack over his shoulder and said curtly, "Goodbye."

About ten minutes later, he arrived at Yusuke's home. He had opened the door to find Botan, Koemna, Kuwabara, and Hiei all seated around the table, waiting for him.

"Way to show up late pretty-boy." Kuwabara jeered. Kurama said nothing and proceeded to put down his bag and sit next to his best friend, Hiei.

"Well, he's here, so that's what counts," Koemna stated. He was in his baby form and was slightly hovering above the ground.

"Yes, sir," Kurama replied.

"So, the meeting. You guys will have another member in your group soon. She should be here soon. She is under my personal care and you all are to be open and truthful with her. Understand?" Koemna told them sternly. There were grunts of approval throughout the room, though the one from Yusuke sounded suspiciously like "Whatever hardass".

"Okay, that taken care of, here is your new assignment. There is a mysterious demon circling Tokyo area and you guys need to capture it for questioning. According to reports, it is extremely dangerous, so you idiots better work together."

By this time, Yusuke and Kuwabara were already starting wisecracks about the whole thing, so they were ignored. While Koenma was starting on his second tirade, the door clicked and opened to show Sei running in, winded from her journey.

"Sorry! I got lost!" she said. Yusuke and Kuwabara snickered. Koemna gave the "the look".

"Let me introduce you to everyone Sei. They're idiots, but they'll work fine." He pointed to each of them in turn and introducing them and their role in the group. When he reached the subsection of 'Demons in the Group' for Kurama, Sei stopped him.

"Minamino-kun, you're a demon?"

"Yes, I'm afraid so," Kurama smiled good-naturedly at her. He turned to the rest of them. "We go to school together," he explained. Apparently, Kuwabara found it necessary for him to elaborate so he started talking.

"Yeah, Kurama is the legendary silver fox demon thief!" he said stupidly. Sei had a sharp intake of breath. Kurama facepalmed. Kuwabara ignored him. "What kind of demon are you?"

"I'm a clouded leopard animal demon," Sei explained. This time, it was Kurama's turn to gasp.

"What? Got something against those, pretty-boy?" Yusuke teased.

"No… Oikawa-san, Let me see your left shoulder," Kurama said. Yusuke and Kuwabara hooted with laughter while Hiei looked at his friend strangely.

"Okay, but I've got a tattoo there," Sei warned.

That's the idea. As Sei showed her shoulder, a tattoo of a white rose came into view. Kurama sighed. "You can pull your shirt back up now."

Kurama took his head into his hands. The others looked at him questioningly.

"Did any of you ever know that Yoko Kurama had a mate?" The others (excluding Sei) looked at him like he was crazy. "That tattoo signifies that she is Yoko Kurama's mate." He took his head out of his ands and stared at Sei. Tears began welling up in his eyes and running down his face.

"Sei, where did you ever go?"

To be Continued

So, tell me what you guys thought. I'd like to continue it regardless, but if get really bad criticism, I won't. Just tell me if it's good or bad, or it needs something. Excuse any typos in grammar, spelling, etc. It's really late.

Thanks! Sayuri