Atop the towers of steam

"The library will remain unscaved, their bodies however..." Zero watched as his children faught an unwinable battle.
Kobushi rushed Makoto and drop kicked him. Kabuto followed up the attack with multiple Ki blasts.
kabuto-              Kobushi-
Ki:1000-200=800    Stamina:1000-200=800

Makoto just let the kicks hit him. He raised his hand up and the sky began to darken.

Health: not even gonna bother

Lily sighed. "Oh. Hello." She had a deeling this fight was going to be a farce so why bother?

Though their attacks did nothing they still gave it their all. Kobushi hit Makoto multiple times with his fists. Kabuto formed two balls of Ki in his palms and slammed them into Makoto.
Kabuto-            Kobushi-
Ki:800-300=500    Stamina:800-300=500

Makoto looked t them. "Burn away." Gigantic bolts of lightning began striking them, over and over and over, burning up everything around them.

Heavenly wrath used

800,000,000 damage to both

Cyril quietly staunched the stronger bolts so that the library wouldn't catch fire.

Emily was looking absently at the roof, listening in with Ama.

The boys were stunned as they stood still and then fell to the ground over the edge of the roof. Zero jumped and caught them both before they hit. He flew back up to the top of the Library and laid them down, "Hahh, I promise you Makoto this won't happen again." He looked at his children.

"It better no-" he was cut off by a large explosion that demolished the northern section of the library.

"Fuck!" Shouted Ama

Cyril threw an arm over his face and his coat was almost blown from his shoulders, "SON-

"SON OF A BITCH WHAT WAS THAT!?" Emily shouted as the perspective abruptly switched to her.

Zero laughed, "hahaha, don't worry, look." Tiny nanoscopic robots began repairing the building, "Within an hour the library will be as it was, plus that section was used for storing old forms and tickets. no harm done. Though I would like to know what that was." The library was rebuilt and copies of the files were made. The Archimedes was restored.

A second exosiob destroyed the nanobots and a roar was heard.

"What IS that?!" Cyril yelled as a second explosion rocked the building.

Emily grabbed Ama just to make sure they wouldn't be separated, "What the hell is that?!"

"Damn it, the hell is this." Zero flew over to the sight of the explosion. The brothers were left on the roof.

A monster roare and began firing explosive blasts from its mouth. Amaterasu was attacking it but it really wasn't doing anything.

"THE FUCK IS THIS?" Cyril shouted, bracing himself again. He shot a few ki blasts tentatively at the thing, probing it.

"THE FUCK IS THAT?" Emily shouted, apparently already on the scene with Amaterasu.

Zero became angered and threw multiple supernova deathballs at the thing. They seamed to have no effect, "Damn, what is this thing?"

Amterasu suddenly darkened, her eyes turning black with red irises. "I'll kill you!" Se began slashing at it furiously.

Ki poured off Cyril as he lent a substantial amount of energy to Amaterasu. "If this thing can withstand Amaterasu, we have no chance."

Emily flew up to Cyril, "Do you have any idea what that is?"

Zero continued attacking the monster, "I won't let you destroy the home I have come to remember." Zero continued attacking.

Amaterasu got more and more enraged as it shrugged off her blows

The monster

Cyril tried engulfing it in a massive ball of fire.

A solitary thunder cloud hung over the beast. Lightning struck it's hide repeatedly as Emily concentrated nearby. She didn't use these powers often.

Zero struck the monster in its vital points with assassin strikes over and over, nothing.

The beast roared and with a beam of energy, destroyed the whole library and te nanobots with it. Suddenly it flickered and then disappeared

"It- it just...!" Emily looked bewildered.

"What." Cyril stared at the carnage.

"Hahaha, thats all it wanted, hahaha." Zero laughed, even without the nanobots the library would be rebuilt. Not to mention Copies of the books would be made. 
Kabuto and Kobushi had come to and watched the whole thing from another roof top, "Well that was interesting." A drizzle startled again.