The protagonist of this novel had a strong personality, but was he always considered weak? (The male lead must be handsome, the female lead must be beautiful)

I recommend the novel One Piece: The Beautiful Navy to you. After all, the male lead, Brian, looks very cute, but people always think that he's weak. In fact, he was a beautiful navy officer who fought hard to protect his loved ones. Brian was a good brother of Luffy and the others. Although he looked weak, he was very strong. He must not be deceived by his appearance. I hope you like this fairy's recommendation. Muah ~😗