Animespotlight | One Piece Clips on Instagram: "The Shield of a Yonko: Why Luffy’s Flag Now Protects Wano! 💯 : "If anyone tries to mess with you, show them this flag!" With those words, Luffy turned Wano into a territory protected by the "phenomenon" of the Sun God. Since the manga's debut in July 1997, Eiichiro Oda has used flags to represent "grand ambition" and "inherited will." By giving Momonosuke his mark, Luffy isn't just a friend; he’s a "hard-boiled" deterrent against the "complex poli