RWBY X Male Reader but it's an Isekai harem book

Chapter 21: Kill The Breach

"INCURSIO!!" I shout before stabbing Neuntote into a King Taijitu to slow my fall.

"Y/N!" Blake is the first to notice my presence.

"What's up Black Cat!?" I ask as I land.

"Not the time Dragon Boy!" It's always nice when Yang's angry.

"And why's that, Firecracker?" I smirk at the fiery blonde.

"Do you not see what's going on around us?" Yang asks whilst punching a Beowolf's head off.

"Yeah, I see it," I decapitate an Ursa Major with Incursio.

'Grimm dust is hard to get off me, you know?' Oh shaddap, you.

"Can you help a little more?" Yang asks.

"What are ya talking about? I am. Look around you," the clone disappears as Blake and Yang take a look at the Grimm being mowed through by Y/N.

"Has he always been that... aggressive?" Blake asks.

"I don't think so..." Yang looks in awe at Y/N's show of ability.

Then a red blur began helping out Y/N.

"And Ruby's keeping up with him," Blake observes.

"We should stop watching and join in," Yang says before jumping into the fray.

Meanwhile.

"He's... different," Sayo says to Ieyasu who smirked down at the carnage.

"He's stronger, unbelievably so," Ieyasu says gleefully. "Maybe this time we'll be able to fight on even footing."

Y/N stops fighting for a moment and looks in the Duo's direction, pointing a finger at the two and then slowly moving his thumb across his throat.

"He heard us?" Sayo asks, thoroughly surprised.

"Tyrants sure are perceptive," Ieyasu grins wider.

"Come on you two. That Dragon Dude's heading this way," Some grey-haired guy beckons the two.

"What was that?!" Y/N seemingly appears next to them in the Mk. II armor.

"Tatsu!" Ieyasu yells giddily.

Y/N swings Incursio at Ieyasu, clashing with his old friend's sword.

'He's faster than before,' Sayo thought as she notched an arrow.

Y/N seemingly gets faster as the armor around his face and forearms move to reinforce the armor on his legs.

"I'm not getting hit by any of you!" Y/N declares.

"Sure about that?" the grey-haired guy from before rushes Y/N, getting a hit in on his chin.

"He got you. Get angry. Kill. Murder. Become an animal," Tyrant eggs on Y/N. "Are you just going to let a murderer touch you like that?"

'No. Hell no,' Y/N thinks as his emotions run wild. "No way am I letting some murderer lackey touch me!"

Y/N's pupils split into white crosses as he activated his Tick to its full extent.

Oath was thoroughly confused about why Y/N's Aura levels suddenly quadrupled, but couldn't ask as he was seemingly locked out of Y/N's mind.

There was an explosion as Y/N evolved, but only in a way he could... temporarily.

Out of the smoke and dust came an entirely different creature. Although it looks like Y/N, it has none of his telltale features. Both of its eyes glow in the dark of the night a bright cyan. Its hair is a deep blue that now reaches the small of Y/N's back. Hard scales even formed on its pale skin. It had its head down, so only the glow of the Incursio Mk. II armor and its own eyes illuminated it.