Bloodline of Gods: The Genius at Olympus Academy! - Chapter 92 - .

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

He was supposed to be the next big thing.Three years ago, Riku Aoyama was Japan’s rising basketball prodigy…Until a devastating injury and a brutal betrayal shattered everything.Now? He’s just a ghost of his former self—until one empty gym, one dusty court, and one crazy idea reignite the fire.Form a team of nobodies. Start from zero. Take on the monsters ruling the court.With broken players, forgotten schools, and no sponsors backing them—Riku’s team, Kaizen High, isn’t just here to play...They’re here to change the game.No powers. No shortcuts.Just sweat, soul, and skill.In a world where basketball is war—Only the crownless will rise.

Xin Yun, a sarcastic young man, traveled to an unknown world by chance, but lost his chance to become the strongest because of his obsession with women... or sex. In a collision of the powers of nine powerful men, an incredible thing happened. Xin Yun was reborn back to the time when he traveled to the Isekai world. A fantasy journey is about to begin... [The comic adapted from this novel is popular all over the world]