Hyperdimension Neptunia Coredimension (HDN x Male Reader)

Chapter 21 A: Gehaburn

Thank you to @gaboball for giving me the concept of this chapter.

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Histoire is currently looking at the window. Chaos Heart formally knows as Y/N is now destroying Downtown Planeptune.

'What have I done.'

"Histy!"

Plutia and the other CPUs from Ultradimension have arrived at the basilicom.

"Thanks for coming in short notice."

"Histoire, what is going on?" Ultra Noire said. Just as Histoire about to talk, a guard walks out of the elevator.

"Lady Histoire, I have bought the sword you ask us to find." The guard then put out a purple sword and put it on the table.

"Thank you; you may leave now." The guard does what Histoire says and leaves. Peashy walkout from the Nep sister's room and asked her, "Where is Neptuna?"

*Boom*

All of them look at the window and see Chaos Heart destroyed a building.

"Histoire, what is that?!"

"That is Chaos Heart, The CPU of Destruction. And I created him." Histoire said while looking down on the book. She then flies to the table where the purple sword is on.

"This sword is called Gehaburn. It has the power to kill CPUs; it drinks their souls and destroys the bodies."

"Are you telling us that the Hyper CPUs use this sword and kill themselves just to kill him?"

"No. Chaos Heart has already killed the CPUs at the Gamindustri Graveyard. I called all of you here to help us kill him. He has the abilities to travel dimension, so we need to kill him before he goes destroy another dimension." A light then blinds all of them. When it dies down, Iris Heart appears before them and grab the Gehaburn. She then broke the window and started flying toward Chaos Heart. The rest of the Ultra CPUs then transformed and followed her.

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Chaos Heart is currently blasting shadow ball toward the city. He put his hand up, creating a barrier, and blocks Iris Heart attack. Multiple Iceball was then coming toward him. Just as he about to create another barrier, his shoulder got hit by a spear from behind. Iris Heart then flies up, making the Iceball hit Chaos Heart entire body.

"Pea Punch!"

Yellow Heart punched Chaos Heart and sent him flying to the wall. Iris Heart pulled out Gehaburn and charged toward him. Chaos Heart raises his arm to charge a shadow ball but was immediately slice off by Ultra Black Heart. Iris Heart then stabbed Gehaburn to his heart. She then stood back a bit. Chaos Heart reverts to Y/N and coughs out blood. His head then looks down, lifelessly. 

"Did we win?" Ultra Green Heart said. Y/N then looks up with a blue streak on his hair and dark blue eyes. His arm suddenly regrows back to normal and pull out Gehaburn for his heart. He then runs toward Iris Heart but was stood back by a giant blade. He turns his head to the right and looks up to see Hyperdimension CPUs in their Next Form and Coredimenison CPUs.

"Neppy?" Iris Heart said with a shocked face.

"How, how are you guys alive?! And why are the god not in his body?!"

"When we see the blast, we immediately active our NEXT Form." Next Purple said.

"And for your second question, our souls got inside the nation's memories and gained control over it. We then insert ourselves to the people who are nearby." Purple Core said. "When you say "his" and the color of your eyes and hairstreak, who are you and why are you possessed Y/N?" Y/N then laugh. A dark aura is suddenly coming out of Y/N, making him fall. The aura creates a darker version of Uzume.

"My name is Uzume Tennoboshi, or Kurome Ankokuboshi as big Nepsy call me, the previous CPU of Planeptune of Coredimension."

"Coredimension? If I remember correctly, we are the only four CPU in that dimension."

"I see, Histoire didn't say anything about Filyn nor me."

"Filyn?"

Kurome went back inside Y/N body. She stood up and created a portal behind her.

"I'll be taking this." She took the Gehaburn and went inside the portal.

"Wait!" Purple Core flies toward the portal, but the portal disappears right in front of him. He then reverts to Nepgear, who was holding the Planeptune Memory in her hand.

'You okay, Nep Jr?' "Yeah, I okay."

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Kurome appears behind five people. They looked behind them and was shook. 

"Other Y/N?"

Chapter 21 A End

I initially didn't plan to make this chapter, but @gaboball pm me his idea for a chapter, and I make it. It also makes me rethink the rest of my chapter, which is going to be interesting. (I think) I hope you guys enjoy this chapter, and I will see you in the next one.