A/N: Welcome back. Enjoy the second chapter. The main character and Sonic characters will meet on next chapter, because in this chapter, I made the Sonic characters interacting each other since that will not be happening again for a while after they meet the protagonist.

N/B: Protagonist description in brief:

Sierra Star

Age: 15

Known as: Princess of the liminals/hybrids, Hedgehog princess

Race: Hedgehog liminal/ Human-Hedgehog hybrid / Harinezumimi / Hog Girl

Hair color: Crimson Red

Eye color: Azure blue

Skin: Fair

Height: 3'2" / 97 cm

Weight: 22 kg / 48 lbs

Body type: Voluptuous

Personality: Stubborn, Hot-tempered, Egoistic, Playful, Secretly Pervert.

Nicknames: Star (By Shadow), Red Chili (By Sonic), Stardust,

Trivia: She likes human boys. She can summon weapons and uses Phantom Ruby for power attack.

***Only Sonic, Shadow and Amy are characterized from Sonic Boom. The rest are original or modern.

Leaving Behind

"Babe...don't do this to me!" The young red female fox pleaded.

"I'm not doing anything." The young green male hedgehog replied in awfully cold tone, while packing his things. "I made myself clear long ago that I'm not interested in making any steady relationship."

"Then why did you fuck me?!"

"Clear your memories, Fi... We always did things together to conquer Moebius but we never practically dated. You're the one who threw herself on me. And I'm not the only guy you got laid with."

"I could say the same!"

"It's not like you never knew. And since I consider myself single, so I can have sex with any girl."

"Have you never cared about me?!"

"I did and I still do, but as a friend. Besides," Scourge finally looked at her, "You want me as your boyfriend only because you thought I was the badboy blue, right? Isn't that why you left Sonic and rejected that fox friend of him?"

"Scourge...I just-..."

"Let me clear you one thing, Fiona." The green hedgehog said, "May be there was a time when I was just another Sonic. But now, I'm Scourge, who is totally a different hedgehog than that blue. I've got my own personality. And I think, I should thank Rouge when I get on the earth, after all she was the one to bring me the master emerald." Scourge then became even sterner, "So if anyone still thinks I'm just recolored evil Sonic...they can go fuck themselves."

Now, Fiona was surprised, she had never seen this side of Scourge. But she also realized that the green hedgehog was a lot more than he seemed to be, which probably was hidden under his evil image, where Sonic was overly expressive about himself so it was easy to read the blue hedgehog.

"I understand..." The fox gave up, "Anyway, when are you coming back?"

"They're saying about at least six months. But, I got this feeling that...it'll take longer."

"What do you mean?"

"They told about staying with some strange hybrid creature to get along with their species...I'm not sure about myself how I got into this inter-species event, but..." Scourge thoughtfully said, "When blue and stripes along with that potleaf-head are there, then it must be something else."

A week later:

"Look Scourge...since we'll be staying together, so we don't want any trouble." Sonic sternly said.

"Once again you made yourself dumb, Blue. Real trouble means when you and that stripes are together."

"I can't help but agree..." Silver muttered as he also knew that putting Sonic and Shadow together to live was not entirely a good idea, "And Scourge, can you please put that smoke down? This is a no smoking zone."

A group of anthropomorphic animals reached the headquarter of social welfare ministry. Only five of them were supposed to stay for a few months, the others were there to see them off. They all were at the waiting room.

"Hmph...this was the first one since I got out from prison...so, lemme have for now. Who knows if I get to smoke again..." the green did not care the albino's warning as he just kept sipping the cigarette held between his fingers.

"You're talking as if we're going to die or something..." The psychokinetic crossed his arms.

"Have you never got that feeling when you guys went to take down Solaris, Materix or others?" He was talking casually so, others mostly did not hear or simply ignored.

"But this isn't any mission. There's nothing threatening in an inter-species program."

"Maybe not for me or that hawk. But say," Scourge straight turned to him, "Why you three heroes are selected together to stay with an other creature instead of any human...?"

Silver was confused, but Shadow got intrigued. He remembered Rouge saying that their future housemate might be a potential threat but all the princess did, was for rescuing her friend. So, he did not over think on it before Scourge just pointed out. Before he could join the conversation, the commander of G.U.N entered.

"Alright, the rest participants have already started their duties in the inter-species cultural exchange program since humans and liminals have been residing here from the beginning. You guys are remaining to join. Your assigned housemates have reached just now. So, please bid goodbye to your friends. We'll be waiting outside." Rouge also followed them because she was supposed to stay with G.U.N to supervise the inter-species event.

The black hedgehog was the first one to find himself in the arms of a yellow hedgehog.

"Don't worry, Shadow. It'll be alright." Maria softly assured, "I'm sure the person you're going to stay with, will be very nice."

"Yeah, thanks." Shadow was extremely uncomfortable, he could not hug her back, even though he desperately wanted to. Then he suddenly came up with a decision,

"Maria...I..."

"Yes, Shadow?"

The black hedgehog took a long breath before finally saying.

"Take care of yourself, Maria. I want you to be happy." Then his eyes fell on the smiling anthropomorphic owl, who always treated Shadow and Maria very kindly and came to say bye to the black hedgehog.

"Hans, watch her for me. I'm counting on you." That's what the ultimate life form decided...to move on finally. It was established that, because of using her DNA, Maria possibly was 'resurrected' as hedgehog, but Shadow knew it better. No matter how much he tried, he never could treat the blonde hedgehog and the dead human same. That's why, when she got closer with Hans the owl, Shadow never found himself jealous. So, what Rouge said a week back, was perfectly right. The Maria who Shadow truly loved, was the human, with who he passed his life at Space ARK. And when a human dies...never comes back.

At the other side, two Babylon rogues wished their boss luck.

"Have a good time, boss." Storm said.

"Thanks. I'll miss you two."

"You mean you'll miss ordering around, right?" The purple swallow snorted.

"Gimme a break, Wave!" Jet frowned before the intercom in the room spoke, "You all are requested to get ready. The last of the participants of inter-species cultural exchange program just arrived."

"Okay guys, I'll be off now. Take care of yourselves." The green hawk said to the other two birds.

"That's our cue to leave as well." Sonic said.

"I hope you all will do your best." Blaze said to the hedgehogs, "And Silver, don't embarrass yourself."

"I'll try..." The albino hedgehog managed to say after trying hard to resist his emotion by a forced smile, "But stupidity is what that makes me myself, right? Hehehe..."

Blaze also laughed, without having any idea how terrible Silver was actually feeling.

Cream hugged Sonic. "We'll miss you, Mr. Sonic."

"Come back as soon as possible, Sonic." Tails also hugged him.

"I'll try, buddy. You and Knuckles stop Eggman if he tries to take chance to attack in my absence. I'm counting on you, Tails." Then the blue hedgehog noticed a thoughtful echidna.

"What's wrong, Knux?"

Knuckles was startled, "I-I was just thinking what to say to Manic and Sonia. They were supposed to visit you this week." Shadow was not the only one who was listening Silver and Scourge's conversation earlier, so this was a good cover because the red echidna did not want to tense up anybody right then.

"Tell them that I am so sorry for not informing about this. Besides, Manic has been training in fights after his band broke off two months ago. Since, I won't be there so tell him to stay at my room so that, you guys help him training more and can use him as handy if Eggman attacks."

"Sounds good."

Amy was hesitating, yet she said, "Um bye, Sonic." But instantly she found herself in Sonic's arms, who whispered, "Ames...I'm really sorry that I couldn't return your feelings. But I don't want to lose you as friend. So, please don't get upset on me."

The female hedgehog couldn't stop tears from filling her eyes, yet she realized that the male hedgehog was being reasonable. So, she hugged him back, "I'm okay, Sonic. Don't worry. We're friends forever. I'll always support you whatever you do."

"You don't know how much I needed to hear those words..."

"Hey Pinky," Scourge spoke up winking, "You can go out with me if you want."

"Thanks..." Amy crossed her arms annoyedly, "But, no thanks. I would rather date a pig instead of you!"

The green hedgehog just snickered, "Right, I also think that you will look better with a pink pig."

"Cut that out, Scourge!" Sonic yelled, "Don't dare to insult her!"

"I was just trying to be generous, I don't reject girls unlike you, blue. It's her loss that she missed the chance to feel honored to be the king's new girlfriend." The anti-Mobian tossed the finished cigarette into trashcan. "Besides, I'm getting bored with all this farewell ceremony."

The blue hedgehog suddenly noticed something, "Hey Scourge..." He looked around, "Didn't any of your friends come with you?"

The green hedgehog had his red sunglasses on, but Sonic could tell the light blue eyes underneath were glaring at him. And he was right when he heard, "Talk it straight, Blue. Are you truly feeling bad for me? Or, you just wanted to see your ex?"

That caught Sonic off-guard, who instantly looked at an utterly shocked Tails. "Of-of course I didn't mean about only Fiona! It's just...you're the only one loner here..."

"And who might be responsible that?" His rival spat back within seconds, "Last time I checked, they're locked at No Zone and thanks to you for that."

"...Well, it was your fault to create a mess at Moebius." The speed hero replied after a pause.

"I was handling it by myself without bringing buddies, unlike you."

Sonic gritted his teeth, apart from Fiona, there was another matter where Scourge was ahead of him, so he did not stop trying to hurt his green rival's ego. "Fiona left me for you, she was always there for you and you just dumped her! At least, I was not being that asshole to Amy."

"This is exactly why, I dumped Fiona. Don't you think she deserves better than an asshole like me?" Scourge removed his sunglasses before wiping them in his jacket and putting them back on, "Besides, after watching all of your tragic love stories, I'm feeling more than fine."

Now that left not only Sonic but also other two hedgehogs speechless. Shadow and Silver might not know Scourge that closely, but the black hedgehog always thought that, comparing to Sonic, the green one had more similarities with him. Shadow is actually no less jerk than Scourge, it's just...his bad sides come out for different reasons and his quiet and more mature personality made him better than Sonic's former evil form. Both the black and the green hedgehogs were more intelligent than the most famous blue hedgehog and always dealt their own problems by themselves where Sonic mostly involved his friends for everything. Not to mention, when it comes about romance or girls, then Scourge is a clear winner between the four hedgehogs even though he is not in any relationship currently. So, Shadow would not be surprised much, if the cerulean-eyed hedgehog took a guess about him and Maria or, Blaze and Silver.

Rouge came back a while ago, but she did not let anyone feel her presence as she caught the ongoing conversation. When she knew that the four hedgehogs were selected in the event to stay under the same roof with a fifth being, she was never this tensed before, specially about the anti-Mobian. But after listening them all and observing Scourge's considerate persona for the first time, she thought this time the four hedgehogs from four dimensions might get along. The bat slightly smiled herself and thanked whoever selected them. Speaking of that, she finally got to know who selected them. It was none other than the hog queen of the liminals, the mother of four anthropomorphic hedgehogs' new housemate. Rouge decided to get the quartet to the authorities as soon as possible...so that she could know what actually the liminal queen's purpose was.

"Sorry to interrupt but you guys gotta go now." She announced.

"No need to apologize, batgirl. In fact, I'm thanking you, for now and for past..." Scourge said before going out. Jet followed him.

"Did he get that attitude from that zone cop Zonic?" Knuckles was the first to comment about the unlikely image of the evil hedgehog.

"Nope...he got it from master emerald." Rouge was being true, but the red echidna let out an irritated sigh. "Anyways, let's go, hoggies." With that, the bat and the thee hedgehogs left the waiting room at first and the others started to leave for Mobius.

When they reached the large entrance hall, suddenly Rouge stopped.

"Wait...I saw something flying..!"

"Eh?"

Before they could even get the words, they all were startled...something indeed just flew by. They all looked up to see what was going on. Then they saw a large unfamiliar creature flying around at the edge of each floor. Shadow quickly pulled out his gun.

"What the hell are you doing?!" Rouge yelled to see the black hedgehog aiming the creature up. "Don't shoot!" She made a failed attempt to stop him from shooting, but Shadow's target was missed as the bullet was shot to somewhere else.

"What was that for?!" He went angry.

"That's my line! I did tell you not to do that, didn't I?!"

"She's right, Shades." Sonic was irritated, "Whatever it was, did not do anything to us-...whoa!"

Along with Sonic, the others were also startled to see a creature right beside them. Scourge pulled up his sunglasses above his head to check clearly if the thing in front of him was real or not, They were shocked and took attempt to attack, before checking out what actually they were looking at.

The creature looked like a young human girl. She was much shorter than the anthropes. Her attire included a spaghetti top and a short skirt. She had mid length light blue hair and lilac eyes. She had a very cute face but had weird features. Her forearms were like bird wings with feathers of light blue color, just like hair. Under her skirt, she had yellow bird legs with curved black nails. She was curvy like Rouge, who was the first one to get the whole situation as she noticed the girl hugging herself with her wings in fear. Then the males also went a bit easy.

"You...you're a liminal, right?" Rouge asked.

The girl was still trembling, before guessing who these people could be. "Ye-yes!"

"Oh...we're from Mobius. I'm working for G.U.N"

"G.U.N?" The girl finally got over her fear. "Um...Miss Topaz said that she and her colleagues were from that agency. Our queen contacted with them to know about residents of planet Mobius."

"Yes, I know." Finally the bat also became casual as she extended her hand to the other female. "I'm Rouge, Rouge the bat."

The girl hesitated before shyly extending her one wing to meet the bat's hand. "I'm Phelix. I'm a harpy. I mean...a bird liminal."

"So Phelix, are you here to participate the cultural exchange event?"

"Yes. I was waiting for my friends so I thought to explore the ministry premises." Then the bird girl bowed down, "I'm sorry if I freaked you out."

"No please, we should be apologizing for scaring you." Rouge turned to her fellows, "Shadow..."

"Sorry." The black hedgehog irritably put his gun back inside.

"Um..." Phelix took a curious look to every anthrope, before her eyes fell on Jet, "Are you guys here for the same reason?"

"Yes, we are." Sonic replied, "How many from your clan are joining here?"

"Me and three other harpies."

"No, I mean how many liminals?"

"Most of the liminals have attended. Humans already knew about us but they were always hostile, and now they're finally accepting us as a part of their society. It was possible because of our queen."

"I see, oh I haven't introduced myself. I'm Sonic the hedgehog, the speediest thing ever."

"You didn't have to add the last part..." Scourge annoyedly muttered.

"Hedgehog...Sonic?" Phelix seemed to think something, then she took a look on Shadow, Silver and Scourge. "Are you guys too?"

"Yes, I'm Shadow the hedgehog."

"It's Silver the hedgehog tee~hee"

"King of hotness, babe. I mean..." The flirty anthrope straightened up as he noticed glares coming from his fellows, "Scourge the hedgehog."

Phelix was silent for a second, before she gasped putting a hand on her mouth, "Oh my... Ceska was right! Sierra is going to burst out if she gets to know this...!"

"What's wrong?"

"Ehh? No no...it's okay I guess, for now." The liminal smiled with a poker face.

"It already got worst, Phel..." Someone came behind from her.

"Kyaaah!" Phelix screamed before looking behind, "Damn Cesk!"

"Sorry to scare you, I just sneaked in...and..." Finally, the other creature showed up. This time the Mobians did not freak out that much, as Rouge demonstrated about this one before. It was another young girl...with lower-half like large snake. Her upper body was of a beautiful woman. She had long black hair, golden eyes and large busts that looked bigger than a anthrope animal's head.

"I assume you guys came for the inter-species program, so there's no need to get scared." The snake-girl also seemed friendly, but she was not nervous, unlike the bird. "I'm Ceska. I'm a lamia, a snake liminal."

"Hello there, I'm Rouge the bat." The girls shook hands.

"I know who you are. I've seen you before at G.U.N's headquarter. We know a lot about you guys, we've come here prepared. Would you be attending, Rouge?"

"It's nice to meet you two. And no, I'm not to attend, I'll be working with G.U.N to cover the program."

"Great...and Phel," Ceska turned to her friend, "Even though there will be a formal introduction, yet I think you should make a talk with him already." She turned to Jet, who was now surprised.

"No...it's okay." Phelix started to blush.

"Do you guys mean me?" Jet asked curiously.

"Yes you...your face is like a bird, but are you really a bird?" Ceska interjected, "I mean, birds don't have hands like that."

The Babylonian got embarrassed, "I'm a Mobian hawk, or rather an anthropomorphic hawk. That's why."

"Since you don't have wings, so I bet you can't fly, can you?"

The hawk felt insulted as he just looked away. Then he looked back when he heard,

"Cesk, that's mean of you!" Phelix suddenly yelled, "You shouldn't say like that to my housemate!" With that, her face got red again as she stopped yelling.

"My my...Phel is already hyper about her new housemate."

"Shu-shut up!"

"Wait, what're you talking about?" Rouge asked.

"It's just...Mr. Bird over there will have our birdie as housemate. So, I was just teasing her." Ceska finally cleared it.

"You're so mean, Cesk..." Phelix puffed her cheeks.

Jet was completely in awe. Before landing here, he had his mind set about that half-human half-something else creatures were gonna be something hideous looking. Now, not only his idea turned out wrong...but also he noticed how the other kind of bird frowned when her friend insulted him. Jet could not help but found Phelix cute with her intense blushing. He was glad that he was getting to stay with her because he did not know how his human housemates would be like. The other Mobians realized one thing now, the liminals were never some threatening monstrous creatures, in fact they're friendly just like humans, not to mention beautiful.

Then Phelix spoke up as she remembered something, "Cesk, these other guys are hedgehogs...it's just as you said."

The snake liminal looked at the four, before particularly acknowledging the blue and the black one. "Are you two the hedgehogs who fought Materix last year?"

"Yes, we are." Sonic smugly said, finally getting a chance to show off.

"Our queen talked about you guys a lot. She admires you, that's why she requested G.U.N for you guys."

"Hold on, Cesk...did you know that already?!" Phelix was surprised.

"Mr. Zord told me a while ago...that's why I sent Hikaru home so that I could take care of Sier. She did not want to believe what I assumed, now was about to throw tantrum if Mr. Zord did not hold her."

"This is not good..." The bird liminal fearfully said.

"Is something wrong?" Rouge asked.

"Yes. And it's about-..." Ceska could not finish her line as they all heard a loud bang noise from the entrance. Before,

"LET ME GO, ZORD! Mom can't do this to me!" A new female voice yelled from afar. Then something entered, the Mobians could not tell at first what the creature actually was...as it was above the floor on the air. It looked like a spinning fan which was moving fast forward and was bright red in color. When the thing disappeared, there was another creature. It was a creature with male upper body and horse lower body.

"Are you okay, Mr. Zord?!" Phelix asked to the horse liminal.

"Yes I am. She has gotten much stronger than before..."

"Damn...!" Ceska face palmed.

Silver stood closer to Sonic, "Didn't we see something like that in Rouge's video?"

"Yeah...I was having this feeling." But before Sonic inquired, Shadow did it for him, who was quietly observing the liminals.

"Our friend here showed us the video of a mermaid being rescued. He was there." The black hedgehog pointed the horse.

"Yes, Mister. I indeed was there." The butler like horseman bowed down. "I'm the queen and her daughter's bodyguard. My name is Zord, and I'm a centaur."

"And what the heck was that before?!" Scourge finally lost his patience as he was the only one who had no idea about liminals.

"You didn't get it, did you?" Ceska answered, "It's the one, who you four will be living with."

Now, the rest three hedgehogs were surprised, "You don't mean...!"

"Yeap...it's our Princess hedgehog, Sierra Star!"

Hope you liked the chapter. It might create an impression that I tried to portray Scourge better than Sonic. But no, it was for bringing Scourge's good points since he is one of the main heroes. If you liked this chapter, don't forget to follow, favorite and review the story.