The famed manga/anime franchise One Piece is often upheld as the ideal shonen series, packed with familiar elements like the power of friendship, the value of courage, and the payoff of training hard for years. One Piece is a stellar example of shonen done right and embodies many appropriate tropes, but it's not just shonen. One Piece also embodies tropes from more mainstream literary genres, including fantasy.
Source：https://www.cbr.com/one-piece-fantasy-tropes/
