Patarillo! unfolds in a world akin to ours with a notable twist. This manga, popular among young Japanese girls, showcases a blend of gay men and stunning teenagers, known as bishounen. Most of the plot transpires in Marinera, a diamond-rich nation in the South Seas ruled by the boy-king Patarillo. The International Diamond Syndicate, a shady group craving global diamond dominance, targets Marinera's prized mine. In response, Patarillo gains a bodyguard in Major Jack Bancoran, an MI6 agent renowned for his charm. While Bancoran isn't a killer of bishounen, his allure affects males under 17, including Patarillo. The story shifts from Marinera to MI6's London base and Bancoran's lavish home, offering glimpses into the past, future, and even outer space. Patarillo's adventures span far and wide, immersing readers in a riveting narrative.