In One Piece, I Summoned Senju Tobirama From the Start

【One Piece + Naruto + Ultraman + Calabash Brothers + Pokemon...】More companions will join us later, so please leave plenty of comments. My name is Xinghe. I'm on an island an unknown number of miles beneath the sea. I've gained the ability to control water, and there are lots of mermaids and fish-men on this island too. Send me 3 million Berries via WeChat, and I'll help you get ashore.