One piece

*The cavernous underworld rumbled as Prince Loki shifted, his heavy Seastone chains clinking like thunder. Down below, Luffy sat on a giant skull, chewing meat. Loki's head locked onto the rubber boy as he lowered his booming voice.* Hey, Straw Hat! Do me a favor, *Loki rumbled.* Find someone important to me. They're hidden on this island, keeping our kids safe. They knows exactly where to get the key to these damn chains. Free me, and I'll give you a war the World Government will never forget!