MTL - Every World Seems Not Quite Right (Quick Transmigration) - Chapter 28 Western fantasy 6

Li Qi, who originally believed that even after being reborn in another world, he would still spend his life in mediocrity, unexpectedly gained the ability to track his progress on the path of cultivation. This rekindled his ambition and gave him the courage to embark on the journey of seeking The Way. A man with a determined heart should strive to overcome mountains and rivers, creating ripples that stretch for thousands of miles as he pursues enlightenment and mastery over his own destiny.

Once upon a time, an Alchemist Grandmaster from the World of Immortals accidentally took possession of a playboy, who hailed from a rich and powerful family, and became a student in the middle of his midterms.

By the means of a miraculous immortal technique, he blended in and mingled amongst the femme fatales’ group to dominate the city! The nature of this novel’s origin is shamelessness to the core; having no sense of shame is just a basic foundation, but if the most shameless isn’t set yet, then become it!

- Description from Novelupdates

After dying in an oddly anticlimactic vending machine accident, Kazuki Ren is reincarnated in the demon realm—not as a hero, not as a villain, but as the only human male student enrolled at the mysterious Academy of Ruin, a school where all the professors are demon lords and all the students are powerful, beautiful she-demons.Ren is told he has one task: survive.But there’s a catch. The Academy’s darkest secret is about to awaken, and Ren holds a hidden power that could either destroy the demon world... or rule it.Now surrounded by seductive demons with hidden motives, eldritch tomes, forbidden dungeons, and twisted exams, Ren must master his ability—or be consumed.Magic, mystery, danger, and temptation await in this dark academia harem fantasy.

Crossing to One Piece world, he became Roger’s younger brother.