Inside the Cave of Obscenity - Chapter Volume 5 5: Decisive Battle 3

Athena, Earth’s most glamorous lone assassin and the seal bearer of the Death Goddess, met her end on her final mission. She succeeded in eliminating the world’s most powerful Mafia leader with her bare hands, but it came at the ultimate cost, her life.Or so she thought.Instead of the eternal rest she expected, Athena’s soul transmigrated into the body of Athena Demerin, a rising celebrity in the Interstellar Era of the Andromeda Galaxy. As the cherished granddaughter of the Northern Duke on planet Asenus, the original Athena had strived to carve out her own path to stardom without leaning on her family’s immense power. But ambition came with a heavy price. She died from exhaustion… or so the official story claimed. The truth? Someone orchestrated her death.Now, the new Athena has inherited not only this body but its unresolved mysteries. Determined to unravel the secrets behind the original Athena's death and fulfill her dreams, she must also navigate a world of fame, family legacies, and interstellar intrigue.But life throws her another curveball, a marriage to Major General Mors Jericho, the galaxy’s most brilliant young warrior. Revered by millions, he is admired for his strength, intelligence, and commanding presence. Yet beneath the surface of this union lies a web of secrets that could shift the balance of power across the galaxy.As she uncovers the truth behind the forces conspiring against her, Athena must confront her own feelings about Mors.Can a marriage built on duty transform into love? Or will her husband turn out to be her greatest adversary?Will she follow her heart, carve her own destiny, or succumb to the shadows of her past?

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

“It’s true… So why does no one believe me?”Sometimes, I play small pranks, but they’re really just small ones.I’m not the mastermind at all.

Having lived a normal life all his life and died without being able to fulfill his desire and when he’s given a task by a god, watch how he takes the protagonists girls while making it hard for the hero.