Maou na Ore to Fushihime no Yubiwa - Volume 5 Prologue

He Lang died by his own hands for the sake of his imperial younger brother’s ambition, whom he loved. He was offered to be reborn in exchange for giving up his past romantic feelings. Reborn without the burden of his romantic feelings, he brings with him a manual to new worlds. He wholeheartedly followed the instructions of the manual to complete the tasks, not knowing that the originally slag gong was blackening…
He pleaded to his affectionate Emperor brother to release him, he pleaded to the paranoid prisoner next door, but until the end he remained baffled.
In the end, he discovered that the full name of the manual was – “Slag Shou Cultivating Manual”
Σ (っ ° ° °;) っ!

- Description from Novelupdates

Julian, the son of Duke Alden and the grandson of Grand Duke Augustus stood Infront of the crystalline ball that emanated mana.The crystal absorbed his mana and started glowing with purplish hue, with a sparks of lightning.“Yes, I have unlocked Lightning Affinity,” Julian said, a spark of excitement lighting up his blue eyes.Suddenly, the ball began absorbing too much mana, Julian's eyes widened in horror as the energy swirled out of control, crackling with an intensity that was and terrifying. Just as he realized the danger, the ball erupted in a blinding flash, a shockwave of power surging outward.Julian wasn't hurt, but he felt a strange sensation as a dark mist swirled in front of him. Suddenly, he saw a strange entity, a shadowy figure, slip into his forehead.Then, Julian heard an unfamiliar sound echo in his head:“WELCOME TO THE MILF SYSTEM.”Connecting....SuccessInitializing.......Success“FUCK THE MILFS AND GET STRONGER, CONQUER THE MILFS, CONQUER THE WORLD.” , The voice saidCuriosity piqued, Julian quickly asked, “Can you tell me more about the MILF SYSTEM?”The voice continued, ”Sure, The MILF SYSTEM will help you reach unimaginable power as a mage. You will need to complete the tasks assigned to you and earn points.“

[Warning: This book contains Strong Language and Mature Content]On her eighteenth birthday, Ravenna felt the weight of exile as she was outlawed from her home because she could not shift to a werewolf, a mark of shame in their world that revered power. Away from all the ridicules and hate, she had at least a more peaceful life, until a beautiful storm knocked at her door. Deceived by its enchanting waves, Ravenna welcomed it with open arms until she was swept away into the deepest depth of the ocean of love. Being a daughter of an alpha, that was not supposed to happen even if she was not living in the pack anymore. Falling in love with the king of darkness.Alaric! He is the epitome of danger. But then, she turned his life upside down. From a heartless man to an obsessive lover. All he wished was to keep her with him. Even if it meant chaining her to himself. Whether what he felt was infatuation, desire or... he just would never ever let her go. Let no man or beast separate him from what he had claimed and marked; else they would face his unceasing wrath.****************“Am of no use to you, why do you still insist on keeping me?” She just wanted to hear him say it. That he loved her as much as she did. She was becoming more desperate as days went by, maybe more than desperate to the extent of destroying herself in this love.Alaric paused and kept his laptop aside. He held her hand and brought her in front of him before pulling her to his lap.Silently, he sniffed her neck and licked it, then replied, “Because I want to.” He continued his actions, and his hands were already moving under her dress caressing her thighs.Ravenna took a deep breath trying to stop herself from diving into pleasure as always. “Will you ever say it?” Her voice came out as a low yearning plead and with his advanced hearing ability, Alaric did not miss a word.“Say what?” His hand reached her pant ready to tear it apart.“That you love me.” Her words made him pause abruptly before looking at her. As usual, his eyes were blank with no hint of emotions making Ravenna feel like she was just fooling herself. For howlong could she endure this?“Do I?” He asked not tearing his gaze away from her eyes that were already tearing up.

[WARNING THIS NOVEL IS A SEX NOVEL WHICH INCLUDES SEX CONTENT][Author Note: I have changed the story entirely]Arthur's head hurt like crazy as he woke up. He kept his eyes closed, rubbing his temples and feeling a super comfy bed under him - definitely not his cheap mattress back home.“What the hell...?” he mumbled as he finally looked around.He was in some rich person's bedroom with a fancy four-poster bed and red silk sheets. Sunlight came through pretty stained glass windows, making red patterns on the marble floor.Everything screamed royalty - fancy mirrors, portraits of hunting scenes, and even a painting of a barely-dressed goddess that seemed to be watching him.“How did I get here?” Arthur wondered, getting out of bed. “I definitely drank too much at Mark's party last night”The last thing he remembered was almost getting hit by a car while crossing the street.Looking in a mirror, he got another shock. He didn't look like himself at all! Instead of being skinny with acne scars, he now had muscles, clear skin with just one cool scar on his jaw, with a reddish brown hair, and green eyes.“Damn, I'm hot,” he said, touching the scar.For a moment, he remembered his old life. He pushed up his glasses. Kids made fun of him. Jessica laughed at him when he asked her out. “Like I'd be with a loser like you,” she told him.Suddenly Arthur realized what was happening. “I've been transported to another world! Just like in those stories online!”He spun around excitedly. “I must be someone important here. This is gonna be so cool! Watch out, fantasy world, your new hero has arrived!”Right then, blue text appeared floating in front of him:[System Starting Up...][Host Found: Prince Arthur Lionheart][Soul Check: Person from Another World][Magic Type: Incubus Powers Activated]“Incubus?” Arthur asked in shock. “Like, those demons that seduce people?”[That's right. Your family's magic has changed because of your Earth soul's hidden desires. Congrats on finding your true potential.]“Can I change it? I want to be a cool battle wizard or something!”[Not possible. Your soul has permanently connected to the Incubus powers. Accept it - your charm is your weapon, attraction is your shield.]“Fuck,” Arthur groaned.[Exactly. The more sexual intimacy you have, the stronger you'll become.]Arthur's eye twitched. “Very funny. Just... tell me what I can actually do.”