Bestial Lust (The Owl House AU)

Oliver looked in a mirror in disbelief.

"Who would have thought that one day I would go through a transmigration…"

The reflection showed a sixteen-year-old boy with messy red hair and golden eyes that shone in the dim light of the room. But what stood out the most were his pointy ears.

"And I didn't even meet Truck-sama. I just went to sleep and… boom! I woke up here" — he grumbled, crossing his arms.

He turned away from the mirror and threw himself onto the bed, letting out a heavy sigh. On the floor, books of healing magic were scattered, some open to yellowed pages filled with notes. He picked one up, flipping through it disinterestedly.

"And to top it off, I'm in an cartoon I've only watched once… The Owl House," he muttered, picking up a book on demonic anatomy from the Scorching Isles.

The detailed illustrations depicted exotic bodies with reinforced bones, magical glands, and bizarre features. He flipped through a few pages before closing the book.

"A somewhat chaotic world, but… if I play my cards right, I can live in peace."

But there was a problem. A huge problem.

"That bastard Belos… He's a real threat to my peace…"

Oliver leaned against the wall, trying to find a comfortable position. His gaze darkened.

"I wouldn't be surprised if a bunch of demons died off-screen during your little dragon stunt."

He sighed and looked away to the blue colors of the Healing Coven robes hanging over the chair.

"I have the memories of this body and some decent healing magic, but it's still not enough for what's to come..."

He raised his head, looking at the ceiling, melancholy.

"So that's it? I have to hide, avoid all dangerous events, and give up on meeting the beautiful women of the Islands… just to survive?"

The thought was depressing.

But before he could proceed, a translucent screen appeared before his eyes.

[Linking Asmodeus System to Host… Please wait…]

Oliver froze for a second. Then, his expression changed.

"YES!! My very own transmigrating rogue!" he shouted, his eyes shining with excitement.

But then a thought occurred to him, instantly cooling his enthusiasm.

"Wait… Asmodeus? Isn't that the demon of lust…?"

[Linking successful.]

[You have been chosen to be the reincarnation of the Great Demon Asmodeus in this dimension. Your mission is to spread lust among the beings of this world, increasing your power and strengthening the authority of the true Asmodeus in the mortal plane through sexual acts, gaining XP and leveling up. For more information, see your status.]

Oliver blinked. Then blinked again.

"… Huh?"

The silence in the room was broken only by the sound of his breathing.

"Well... it's not exactly what I expected, but I guess it works..."

He adjusted himself on the bed, supporting himself on his elbows, and spoke aloud:

"Status."

[STATUS]

NAME: Oliver Graves

LEVEL: (0)

XP: (0/10)

ATTRIBUTES:

FOR: 4

DES: 4

WITH: 3

INT: 8

MAG: 12

FREE ATTRIBUTES: 0

DEMONIC POWERS:

True Form: Transforms into a version of Asmodeus, increasing all attributes by +10. The duration of the transformation depends on the Intelligence attribute. This power evolves as the level increases.

KNOWN SPELLS:

Healing Magic (Basic): Can relieve pain and heal minor injuries.

Intrigued by the transformation, Oliver wasted no time and stood in front of the mirror.

As soon as he activated the skill, a wave of energy ran through his body.

His hair turned as black as night. His skin took on a purplish hue. His irises darkened, while his pupils took on an unearthly violet glow. His teeth and nails sharpened to razor-like points, and a pair of small white horns began to grow from his forehead. Finally, a long purple tail emerged, its tip resembling an arrowhead.

Oliver looked at his new appearance, impressed.

"Definitely the very definition of a demon… Just with a different color scheme."

Ten minutes later, his body returned to normal. A slight mental fatigue set in, as if he had expended a significant portion of his energy.

He fell back onto the bed, staring at the ceiling.

"It seems I have my answer... In order to survive, I will have to become some sort of Incubus."

His eyes fell on the translucent screen and he grimaced.

"I was also sixteen in my past life… My sexual experience is practically non-existent. How the hell am I supposed to seduce powerful witches? Even knowing their personalities, it's still absurd!"

Frustrated, he ran his hand through his hair.

"Maybe I should start in Hexside…"

Before he could finish his thought, a sound echoed in the air.

[You have a Starter Pack. Would you like to open it?]

Oliver processed the information for a second before grinning from ear to ear.

"Sim!"

[Congratulations! You have acquired: Hormone Magic (Basic).]

Oliver's eyes widened.

"If it is what I think it is…"

With his heart pounding, he reopened his status and searched through his known spells.

Hormonal Magic (Unique): The first magic created by Asmodeus and his most used. Capable of increasing the target's sexual desire. Prolonged use can cause dependence. The caster also becomes more attractive in the eyes of the target. The intensity of the effects increases with the level and amount of magic used.

A mischievous smile spread across his face.

"Exactly what I was thinking… Even if it's just a rudimentary form of hormone manipulation, it's a start."

His eyes sparkled.

"Now this is getting interesting."