What is luffy tat?

Luffy's tat (tattoo) is a distinctive red mark on his chest, in the shape of a cross with a curved end. It is a symbol and reminder of his determination to become the Pirate King and achieve his dream of finding One Piece. The tattoo was given to him by his sworn brother, Sabo, who also has a similar tattoo as a tribute to their shared belief in pursuing their dreams and defying the world's expectations. Luffy wears it proudly as a symbol of his identity and unwavering perseverance.