One Piece primarily focuses on action and adventure, since protagonist Monkey D. Luffy is all about freedom and exploration, not being an idealistic hero. Still, Luffy is a good person at heart, and he will gladly show other people kindness with his words, actions, or both, even if it means showing them some tough love. This has led to many heartwarming scenes with One Piece's hero, and he's not alone, either.
Source：https://www.cbr.com/heartwarming-one-piece-scenes/
