One Piece: Supreme Check-In System - Chapter 40: Walking Around in Fish-Man Island

Born crippled with a rare disease, abandoned by his indifferent father, and hated to the core by his half-siblings, Xylen’s life was nothing but a tragedy.His mother died searching for a cure, and the only person who ever cared for him was cruelly taken away.Betrayed. Schemed against. Left with no way out.Lured into playing Fallen Realm Online with the promise of earning money for treatment, he fought desperately, doing nothing but living in the game and failing over and over again—only to be killed by his half-siblings right before completing a crucial quest. His reward stolen. His last hope shattered.With nothing left to lose, he ended his own life in the real world… only to wake up on the day the game was released.Armed with future knowledge, Xylen vows to seize this second chance. He will become stronger. He will protect the only person who ever mattered. And he will make those who wronged him pay.But fate had other plans.Instead of a normal start, he is forced into a demon fief as a baron—with an uncle who wants him dead. If he fails to kill his uncle and defend his land, his character will die, and he will be permanently banned. Worse, he is given a race despised by both NPCs and players—and given a class that should not exist.A mystery, fearsome, and despised character to the world. Feared by gods and demons alike. A walking catastrophe in the making.Yet, the more he learns about his new power, the more he realizes…This is no curse. This is his greatest weapon.And when the world finally learns the truth about Fallen Realm Online?Xylenia will be the name that shakes reality itself.

(following the boat) When a person who can get random superpowers every day enters the world of pirates and joins the protagonist group, what will happen as a result?

Luffy: “Si Guoyi! Lin Bei, let’s jump from the sky again!” Kebi: “Please don’t!” Sauron: “Be sure to leave Lin Bei’s room at twelve o’clock every day!”

Nami: “This bastard, just let me…” Akainu Sakasaki: “Bastard Lin Bei, turn me back into a man!

The old lady used her ability to come to her aunt once! “Big” boys, come and meet your father! “Lin Bei:!!! This really doesn’t exist!!!

- Description from novelbuddy

Collecting legendary antiques, retracing the mysterious martial arts. From the moment he activated his cheat, Casio knew that he was no longer ordinary.[Legendary Antiques: Wind Elephant Ivory Pendant]Seventy years ago, in the North Flow Country of the Hong Li Federation, at the Wind Elephant Gate Youth Training Camp.“Li Wei, you are a coward! On the day your sister was brutally murdered, you were trembling in a corner! On the night of the Sect Destruction War, you disgracefully fled! During the many long years of revenge, you missed the opportunity again and again!”“Now let me teach you what bravery is, let me tell you how to turn suffering into your power. I hope at the moment you behead your enemy, you will remember: you are a man, an upright man!”The taboo era, hidden legends. A Foggy continent paralyzed by the sealed land. Countless brilliant antiquities wail in the ruins.I will witness your lost legends in the mist, the knights in the sky, the ghosts in the desert, the rats in the mud. The direction of sword fights points to the light, and flowers will grow where bullets fall. The winds of history will eventually sweep away the rubbish from the era's gravesite.

Yang Feng somehow transmigrated into a different world and received a legacy of an ‘ancient high tech’ family, which does not directly raise his power, but gives him the technology to build things which are way more advanced than the seemingly medieval world.