Death Rides on Swift Wings: a RWBY x Male Reader x Highschool DxD Story

EX: Crossover Extravaganza!

*Y/n POV*

After I felt my feet hit solid ground, I dusted myself off. I put Fell Cyclone on my back, and began to look around. There was a group of kids a few years younger than me to my right, and I seemed to be in a massive city, comparable to Vale.

"F*ck. Me," I said, "Where am I now? And where the hell is Gaos?"

"Who are you?!" One of the kids yelled, the one with black hair, devil horns, and completely white skin.

"No time, kid," I called back, "Got places to be, people to see. I'm probably going to kill someone later."

I turned to walk away, and something flew by my face. I looked at what it was, and saw that a blob of ink hit the ground in front of me.

I watched, as a figure began to grow out of the ink. The boy from before rose out of the ink, and fixed his suit and tie, before getting ready to fight.

I sighed deeply, "F*ck it, I need to take out some rage right now."

I pulled out Fell Cyclone in sword form, and pointed it at him, "Come now, show me a fight."

"I won't let you down!"

He came running at me, and I slashed horizontally at him. He deflected the attack with a wall made of ink. He uppercut me, sending me flying into the sky. I flipped and spread my wings, hovering in the air above him.

"What the hell?" I asked, "Is that a semblance or something?"

"What's a semblance?" He replied, "Answer the question, who are you?"

"Fine," I said, "I am Y/n Gremory, brother of Sirzechs Lucifer, and heir to the Gremory line!"

"Lucifer?" He questioned, "Well, it's always nice to meet a fellow devil!"

He chuckled to himself, and I leaned on my arm, taking a relaxed position.

"You're a weird one kid."

"I'm honestly surprised I've never heard that one before." He retorted, "Listen, I'm sure you're a great guy, but I gotta finish this."

He took a running stance, and started running at me. I was too far out of his range for him to jump, so I watched him curiously.

As he came close to me, he leapt into the air, and two black wings launched from his back, causing me to gasp.

"Fallen Angel!"

I pulled Ascalon out, and slashed at him quickly. He wasn't able to guard himself, as I cut him out of the sky.

"As a devil, it is my duty to take out Fallen scum like you," I said, "And I take great pride in cutting you down!"

I raised my blade to stab into his chest, but something struck me from behind. I tried to grab it, only to find my hand stuck to whatever it was.

"What the hell?" I asked, "What is this?!"

"It's my sticky balls!" The little purple one yelled.

"That's... actually disgusting."

The blonde guy with a black jacket ran at me, and punched me, sending electricity coursing through me. I dropped Ascalon and backhanded him with the Boosted Gear, sending him flying into the wall.

"BOOST!"

I grabbed an alien girl who was running at me, and threw her at the girl who was sitting like a frog. I then noticed a guy with blue hair running at me, and jumped into the air. I landed on his shoulder, wrapping my legs around his neck. I swung around his neck, and used my legs to throw him at a guy wearing a suit of armor.

"Die, bastard!" I heard behind me.

I turned around to see a spiky haired guy flying at me, explosions coming out of his fists. As I was reflecting on how weird it was, even for my world, he came close and shot an explosion right in my face.

"I got this bastard!" He yelled.

"Go Bakugo!" I heard someone yell.

I blew the smoke away, revealing that I was unharmed, "So, Bakugo was it? Let me show you what real power is."

I grabbed him by the neck and lifted him up, slowly squeezing. I didn't really feel like killing a kid, so I threw him at a building. I then heard someone running up behind me.

"DETROIT SMASH!"

I turned and caught the fist of a green haired kid in my hand, not even flinching.

"You know what? I'm getting pissed off."

*Third Person POV*

Y/n began to pull at the ball holding his hand to his back, ripping a chunk of his clothes off. He then grabbed the ball in his other hand, and began to pull.

The students of class 1-A watched in horror and shock, as Y/n pulled the ball off his hand, tearing his skin and revealing muscle.

"You wanna fight!?" He yelled, "Then I'll give it to you!"

He put his hand to his mouth, and let out a loud, shrill whistle. Within seconds, they heard loud flapping sounds, and a massive dragon perched itself on a nearby building. The students watched in awe, as the 100 foot long, 150 foot tall dragon easily balanced on the building.

(A/n: Just a reminder, Gaos is half the size of Funus.)

"You rang, Y/n?" He said, his tone high-pitched as always.

"Gaos," Y/n said, "Assist me in killing these fools."

"Sure thing Y/n," Gaos replied, "But... where's the book?"

Y/n started looking around, patting himself down, looking for the book. It wasn't anywhere he looked, and he started cursing.

"Oh mother f*cker!" He yelled, "I had it! F*CK ME!"

"Y/n, the girl! She has the book!"

Y/n turned his attention to a girl with black hair and a revealing costume, who was holding his book against her chest.

"Well then," He said, "I'll go get it."