"Kamui?!" Hinoka turned her head towards the scream that came from behind her. "Kamui, what is it?!" She ran to where her brother was located and stopped cold at the sight before her. "By the gods..."

The Hoshidoan prince was gone, now before the redhead was a mighty dragon, leering at her with drool dripping from its maw. Hinoka took a step back as she tensed up, wondering what the hell had happened to precious brother. "K-Kamui..."

The dragonized prince roared at her, sending her to the ground. He then lowered his head near her chest, placed his maw on the front of her outfit and ripped it off, leaving her bare chest open for all the world to see. "Raaaaggh..." A lustful growl escaped from his lips.

"Kamui! Stop!" Hinoka shouted, but it was no use as the dragon prince dragged his slick tongue onto her breasts and her face, causing her to wince from his hot, heavy breath blowing upon her. The redheaded princess gasped as she was now covered in saliva, the smell making her almost dizzy. "K-Kamui..."

The dragon prince then dragged a claw down her chest and ripped off the rest of her outfit, leaving her fully nude. He then proceeded to lick her pussy in a hungry manner, coating it in his drool as well. "Oh, gods...!" Hinoka let out a wailing moan that was unlike her.

Then the dragon prince stopped licking his sister's slit, grabbed her hips and brought her towards his fully-erect cock. Hinoka's eyes were wide open as she took a glance at the dragon rod. "N-No... NO! YOU CAN'T! IT WON'T FIT! STO-OOOOOOOH!" Hinoka's protests turned into a scream of pain mixed with pleasure as Kamui buried his cock inside his redheaded sister, its outline appearing a bulge on her stomach.

"GRAAAAH!" Kamui proceeded to slowly fuck his sister with his claws on her buttocks for leverage. He looked at her bouncing breasts and listened to her moans and cries, causing the dragon prince to get even more aroused and gradually speed up his thrusts.

Hinoka's eyes slid into the back her head as she felt her mind being fogged up from the intense fucking she was receiving. "Ooohhh...!" The redhead felt her pussy being pounded wildly as her brother sped up his poundings. "Aaaaagh...!"

With a loud roar, Kamui released his seed into his sister, seeing her stomach swell up due the volume and amount of cum that was inside her. He then removed her from his shaft and dropped her to the ground, watching his cum being gushed out from her pussy.

Hinoka felt her limbs go numb as she forced out the cum deep inside her womb. "Aaaahhhh..." She panted heavily as she subconsciously released a small trickle of liquid gold onto the ground below her. "K-Kamui... Oh, gods..." The redhead then finally slumped to the ground, unconscious.

Kamui let out a growl as he reverted back to his human form, holding his head in pain. "Urgh... What the hell did I do...?" He looked up and saw Hinoka lying down on the ground. "Hinoka-nee-san!" He staggered towards her, ignoring the killer headache that was plaguing him right now.

Only one question was running through Kamui's mind: Why did he keep having these blackouts whenever he was around with a girl?