It is a series. The idea of the game was founded in a anime series called One Piece. I my self hated anime, when I came across the series I began to understand that it's a culture and still a cartoon with different styles. The anime is very emotional yet badass at the same time. It's like a 12 year dreamed of this shit. Some nudity but nothing revealing much just teasing with badass powers and death. Anyways the story goes as pirate that grew famous and other pirates wanted his treasure called the one piece. They set sailed to find the one piece in the grand line. The grand-line is a huge valley esc ocean surrounded by mountains that are crazy tall. There are islands in the grand line with their own stories. Most pirates got by in the grand line by having several pirates and most likely the captain having devil fruit powers. No spoilers except below. Beware.