"Enough," said Sasuke, cutting off another of Naruto's speeches, "I'm the strongest there is now."
Now, how to prove it? He could absorb the chakra of the captured bijuu, or he could use Kaguya's dimension switching technique. Their eyes were similar, after all.
Yes, that's it, he thought, I'll prove my strength by mimicking the progenitor of all chakra.
So, he tried to shift to Kaguya's gravity dimension.
…
Aqualad's eyes widened in shock as the virtual air hockey puck slid into the goal. He glared at Kid Flash, his opponent, who was casually eating a banana during their match. M'gann and Robin watched with amusement.
"Recognized, Superboy, B04," the teleporter droned out.
With a flash of light, Superboy walked into the room, his face set in a scowl. M'gannn's face, meanwhile, lit up in a smile upon seeing him.
"Hi, Superboy," she said. "How was Metropolis?"
Superboy didn't answer, opting to walk through the holographic air hockey table, dispersing it in the process and causing M'gann to frown. The sound of a woman clearing her throat then echoed through the room, drawing the group's attention.
"Ready for training, everyone?" Black Canary asked as she and Martian Manhunter walked into the room.
"Uncle J'onn!" M'gann exclaimed, running up to the older Martian and wrapping him in a big hug.
"M'gann," Martian Manhunter said. "I was in the neighborhood, so I thought I'd stop by and see how you were adjusting."
"A few bumps, but I'm learning."
"That's all I can ask.
Superboy watched with envy, before turning and starting to walk away.
"Stick around," Black Canary called to him. "Class is in session."
Superboy stopped and turned to look at her.
Black Canary walked to the center of the room and a circle of light grew around her.
"Incoming signal," said the teleporter. "Not recognized. Action required."
Everybody in the room looked to the machine in shock for a moment. The announcement raised a million questions. Had the League's network been compromised? Who or what was coming? What was their intention? If they were headed for Mount Justice, did they know about the team?
Black Canary recovered first, assuming a fighting stance. "Override, Black Canary."
The teleporter whirred to life and a familiar flash of yellow light filled the room. When it faded, a teenage boy with pale skin and black hair, dressed in a grey zip-up shirt and a black skirt appeared. He looked around for a second, appearing profoundly confused, then his eyes settled on Canary. His eyes were bizarre, each had a unique design rendered in unusual colors, red, black, and purple.
"Koko wa doko?" the boy demanded in Japanese.
Most of the room's occupants simply looked confused, but Robin stepped in.
"Who are you? Why are you here?" he replied in Japanese.
"That's my line," the boy said coldly. "I appeared here after attempting to use some space-time ninjutsu."
Robin raised an eyebrow. Ninjutsu? Still, he got the gist of what the boy was saying. He gestured to the teleporter. "This machine makes artificial space-time ninjutsu. It must have intercepted whatever you did."
The boy scowled at Robin, causing the Boy Wonder and everyone else in the room to hallucinate a sword tearing through their throats. "Was this unintentional?"
Robin tried to appear unfazed, though sweat poured down his face. "Yes. We weren't even using the machine."
The boy's face relaxed slightly. "Send me back."
"My comrades don't speak this language. Let me see if they know what to do?" Robin said, then he turned to the other heroes and explained the situation in English. "The guy says he tried to use 'space-time ninjutsu,' must have resonated with the zeta tubes or something. Anyone know how to send him back?"
"Send him back?" Kid Flash exclaimed. "After the stunt he just pulled, he deserves some kind of punishment!"
"We need to know more."
"The zeta tubes only work between specific locations," Black Canary explained.
Robin turned back to the mysterious visitor. "We can't send you back with this machine, but we have other forms of transportation. Where are you from?"
"The Land of Fire," the boy replied. "I was right on the border of it, at the Valley of the End."
Robin did some quick searches on the computer. "I'm sorry, but those places don't exist."
The boy's eyes widened in surprise.
Superboy, who was fluent in Japanese thanks to the G-Gnomes that taught him, cut in. "Maybe he's from another planet."
"Another dimension is more likely," the boy said. "I might be able to send myself home, but given how my first attempt went, I'm not eager to try."
"Yo, Rob, fill us in," Wally complained.
"He's from another universe," Robin explained. "He says whatever technique got him here might be able to send him back, but apparently this wasn't where he was trying to come, so he's not eager to try it."
"Understandable," said Black Canary. "Who knows where he might end up if he tries again? We'll arrange for living conditions for him until he's ready to try again. He can even stay here, as long as he doesn't do that again."
Robin relayed the information to the boy and, tiring of this routine, had M'gann telepathically teach him English. The boy looked to Black Canary and his eyes shifted, becoming black.
"Thank you," the boy said. "I'm Sasuke Uchiha."
The others hesitantly introduced themselves.
"So, Sasuke, care to watch us train?" Canary asked.
"Sure."
Sasuke watched Canary easily defeat Kid Flash and Superboy. The woman wasn't half bad as a fighter. She was skilled, but lacked power. He pegged her at about genin level. The others were Academy student level. Superboy became angrier than he had already seemed after his defeat. The boy tried to storm off, but Black Canary stopped him.
"Training is mandatory," she explained.
A holographic screen suddenly appeared with Batman on it.
"Batman to the cave," he said. "Five hours ago, a new menace attacked Green Arrow and Black Canary. The attacker was capable of studying, then duplicating the abilities of its opponents. Arrow called for reinforcements, which nearly proved disastrous as our foe gained more and more power with each new combatant…"
Sasuke walked up to the screen and stuck his hand through it, widening his eyes in surprise when that actually worked. What sort of screen was this?
"Who is that?" Batman asked.
"I'll explain later," Robin said.
"…Anyway, it took eight Leaguers four hours to defeat and dismantle the android."
"An android?" Robin exclaimed. "Who made it? T.O. Morrow?"
"Good guess, Robin, but Red Tornado doesn't think so. The technology bears the mark of Professor Ivo."
"But Ivo's dead!" Aqualad protested.
"So we all thought, or hoped," said Canary.
"The parts are being sent to two separate STAR Labs facilities for study," Batman said. "We're also sending two decoy trucks. Your job is to protect the real trucks."
"So now we take out your trash?" Superboy demanded.
"You had something better to do?"
"Coordinates received," Aqualad said. "Let's go. Sasuke, you stay here."
The team moved out.
Sasuke waited for a few minutes before following the team out silently. He watched Robin and Superboy fail miserably at protecting the parts, then followed an enraged Superboy to Gotham. Superboy landed on a train. Sasuke leapt on next to him.
"Weren't you supposed to stay in the cave?" Superboy asked.
Sasuke merely grunted in reply and the two entered the train. They found Ivo inside with his mechanical monkeys, which Superboy destroyed in a rage.
"Access: Captain Atom," a dull voice said, then a yellow beam of energy hit Superboy in the chest, sending him flying backwards.
An android stepped out of the darkness. Ivo looked at Sasuke.
"Amazo, get him too," Ivo said.
Sasuke's eyes shifted to his Sharingan and Rinnegan, then he fired Amaterasu at the strange being before him. The sun heated flames quickly melted through the androids outer shell. Sasuke formed a partial Susanoo and bisected the android with his sword.
Ivo looked on in shock, then bolted for the door. Sasuke teleported between Ivo and the door and prepared a Chidori.
"Sasuke, wait!" Superboy yelled. "We don't kill the bad guys!"
Sasuke shrugged and made eye contact with Ivo, who screamed in pain and collapsed, unconscious.
…
"You both disregarded orders and jeopardized the mission," Batman said. "The end result worked out, but you're both going to have to learn to work with a team if you're going to be a part of this team."
Superboy looked at the floor. Sasuke just grunted.
"That said, good work. Sasuke, your welcome on the team. Just try some teamwork."
"I've been part of a team before," Sasuke said. "I think I'll adjust."
