In One Piece with Hidan's Abilities

Our character Alex has been subjected to torture and left to die by his supposed family from a young age, leading to significant psychological issues and the emergence of troubled personality traits. However, years of living on the streets have given him experience in shady dealings. After a long life, he decides to leave his criminal past behind due to illness and fatigue, settling down to lead a sedentary life, leaving his years of wandering behind. His senses have dulled, and he has lost his cautiousness, becoming an ordinary man who watches anime and reads manga. But everything changes when a mysterious package arrives.

After his death, Alex migrates to another world with the abilities granted to him, but that's not the end of it. The gods take pity on him, granting him a system, and he sets out to destroy the world of One Piece with the powers he gains.

!!!! Attention: The protagonist of this story has a negative personality. (Although they may appear normal at the beginning of the series, you'll understand as the story progresses.) The series contains R18 content. (I will indicate it at the beginning of each chapter; you can skip it if you want.)!!!!