One Piece: Fist of the World - Chapter 17: Cats and Dogs

When Jiang Cheng was told to return to a family that he never knew or had a relationship with, he had never expected to end up meeting a young girl, and eventually, her seemingly roguish brother Gu Fei, as a first encounter in the new city.

A no name Character, that never appear in novel.An ExtraAeron a young man, found himself in Extra character body that never appeared in the novel.only to find He was strongest, in the generation of geniuses.And his mother was“Dragon Queen....”______________“Life never gave me a script, but now I'm living in one. Only this time, I'm the one who’ll write my story.”

“Young man, your chastity was lost.”

“Σ ( ° △ °|||)!!”

Give up your virginity to save the world! Our motto is–” “I didn’t think it would be bent, la la la la la!”

- Description from Novelupdates

Every twenty years, the world of Tower Defense arrives to take away people and make them participate in the survival game. You can get unimaginable rewards if you can win. You can also inflict severe damage to your country if you lose.

Pierce finds himself in this world, and sent to the Tower Defense alone, while other teams have a hundred people.

Fortunately, he awakens golden hint system. Not only can he see useful alerts, he can also discover the fatal weaknesses of his enemies. Every monster he takes down rewards him with top-tier prizes. While the other players are still struggling, he is already swinging his swords to take the lives of gods.