"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.

Suddenly, Sasuke was surrounded by huge buildings of glass and steel in the middle of the night. Naruto was nowhere in sight. In fact, no one was anywhere in sight. Sasuke would have expected such a large city to have a lively nightlife, but there was no one around. How suspicious. Then, Sasuke sensed an attack from behind and leapt forward.

He halted and turned to see a man in blue armor crouched where Sasuke had once stood, holding a red spear embedded in the concrete beneath him. That dimension shifting technique was unexpectedly chakra draining, yet it looked like Sasuke would have to fight anyway.

"Not bad, kid," said the spearman, standing to his full height. "It takes some serious reflexes to dodge that."

Sasuke teleported to the man, dropped to the ground, and kicked upward, hitting the man square in the jaw. Following that, he leapt into the air and shadowed the spearman. Sasuke unleashed a savage combination of kicks and punches, ending with kicking the man in the stomach and punching him in the chest, driving him down into the ground. It was a little slower than he would have liked, but then it had been a while since he had performed the Lion's Barrage.

The spearman quickly recovered and stabbed at Sasuke's chest. Sasuke easily dodged the blow and aimed a chidori at the rising man's chest.

Lancer leapt back with a manic grin on his face. It appeared he had found someone pretty fun to fight. The kid had an insane amount of mana and it looked like he knew how to use it. Still, the kid was panting heavily. It looked like whatever spell had allowed him to appear out of nowhere like that was taking its toll on him.

Lancer charged at the kid.

I am not going to die like this, Sasuke thought. I'm going to become Hokage, and bring peace to the world!

Then, he started glowing with a bright white light and a strange circle with markings appeared on the ground in front of him. There was a blinding flash of light. When Sasuke could see again, a figure in heavy silver and red armor with a horned helmet and a sword at their hip was standing in front of him.

"Servant Avenger, accepting your summons," the figure said calmly. "I ask of you: are you my Master?"

Sasuke had no idea what was going on, but he was quick to take advantage of the opportunity that presented itself.

"Sure," he said. "Now, help me kill the spearman."

"Yes, Master."

The figure, Avenger, drew their sword and charged at the spearman.

Not again! Lancer thought as he parried Avenger's first strike. What were the odds of two potential victims summoning Servants at the exact right time, one of them being an eighth Servant called Avenger?

Avenger struck again with a diagonal slash. Lancer blocked the attack and the two Servants stood with their weapons locked against each other for a moment. Then, Lancer heard a sound like many birds chirping at once from behind him. He threw himself to the side. The kid's lightning technique grazed his arm and Avenger's sword powered through Lancer's block, raking across his chest.

Lancer eyed his two opponents warily.

"Come on," he said. "This is getting good!"

Lancer, that's enough come back!

"Oh, not now! Sorry, but my Master is a coward!"

Sasuke watched as the man suddenly started talking to himself, then made a lame excuse before running away. Sasuke turned to Avenger.

"Okay, now it's time to explain what's going on," he said.

"You are part of the Holy Grail War, a competition among heroes summoned as Servants and their Masters for a wish-granting artifact known as the Holy Grail. Normally there is only seven of each, but we are the eighth pair."

"Hn. Interesting. Your name is Avenger, right?"

"That is my class. Servants are divided into the classes Saber, Lancer, Archer, Lancer, Rider, Assassin, Caster, and my class, Avenger. Our classes are used as names to protect our identities."

"Because, if you know a heroes identity, you know their strengths and weaknesses."

"Precisely. We should go to the nearest Catholic Church to register as participants."

"We'll find a place to stay first, then you can tell me what a Catholic Church is."

"Okay."

Sasuke found a hotel. He used a genjutsu to pay for his stay and disguise Avenger's conspicuous. Though, apparently, his clothing was unusual here too, if the fact that he had never heard of this "cosplay" before was any indication.