One Piece: Unreal Adventure - Chapter 49: Will they believe you?

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

A 21st-century tech manager, accidentally thrust into the body of Emperor Commodus—yes, the infamous villain played by Joaquin Phoenix—has one goal: not to die like him.Armed with his wits and a hyper-intelligent AI on a solar-powered laptop, he must navigate the treacherous politics of ancient Rome. Everyone, including his own sister, expects the arrogant, decadent tyrant. Instead, they find a calculating reformer. But as he tries to avert the fall of the empire, he discovers that being a “good” emperor might be even more dangerous than being the monster everyone is waiting for.

Five hundred years later, a superhuman talent cultivated by the state perished during a mission, and his soul transmigrated, taking possession of the body of a young master from a prominent family who suffered from an anxiety disorder. From that moment on, his extraordinary life began, spanning across various fields such as business and medicine. Wherever he set foot, others could only look up to him.

[TRIGGER WARNING: Mature Content + Dark Themes]EXCERPT:“Axel, no. We… can’t do this!” I jolted back when he pulled up my skirt.As if to retaliate, he grabbed my wrist and yanked my body to his. “We can do whatever I say we can do, María José.”“I’m your brother’s reject. Do you even hear yourself right now? He didn’t want me, Axel. What does that make me to you?”“I don’t care about Álvaro’s foolishness. It's his loss for losing a woman like you.”“Okay, I must confess. I'm not worried about him either. It's Rosa… you're getting engaged to my sister in a month!”“Let me remind you, María José—I don’t give a fuck about that, either.”No matter how hard I jerked, he wasn’t letting me go. And part of me—so, so foolishly—didn’t want him to.______Having spent her life avoiding the spotlight, María Jośe never imagined she’d be the one to bring shame to her esteemed De la Vega family. With beauty as captivating as a field of lilies, she is the prized daughter of an ambitious father who cares more for his reputation than his children’s happiness.When Álvaro Montenegro, the arrogant heir to the Alpha title, sets his sights on her as his chosen Luna, María Jośe is desperate for a way out.But everything changes when the Moon Goddess answers her prayer in the most unexpected way: María Jośe discovers she is an Omega—wolfless and the lowest rank in the pack. Once held in awe, she is now shunned; a source of shame to her father and a target for ridicule in the pack.As her life turns upside down , María Jośe's hatred for the pack grows. The only solace she finds is in her growing, forbidden bond with Axel Montenegro—Álvaro’s older brother, who has turned his back on the pack to live as Beta.These two developed a love-hate friendship born from their shared disdain for the pack’s cruelty, which slowly evolves into a passionate, secret romance.But when Álvaro discovers Axel’s interest in María Jośe, jealousy ignites within him and he suddenly wants María Jośe as his own.Love, vengeance, and betrayal all brewed into a whirlwind of drama, desires, and deadly comebacks. Will María Jośe rise from the ashes of her former life, or will she be consumed by the power struggles of the pack she despises? Will she give in to the oldest brother who is scared of commitment or the younger one who fiercely seeks redemption?