Shohei Sato's devotion to the pirate manga "One Piece" culminated in a wedding themed on the series, and he's not the only superfan obsessed with its intricate plots and swashbuckling characters.
The Japanese comic-book saga began 25 years ago and is one of the biggest-selling mangas of all time, with more than 500 million copies sold globally.
It follows straw hat-wearing Monkey D. Luffy and his team as they hunt for treasure, and has grown into a sprawling cultural franchise—now riding even greater waves of popularity thanks to a new hit film and an upcoming live-action Netflix series.
Since childhood, 29-year-old Sato estimates he has spent "well over 10 million yen ($67,000 at current rates), if not 20 million" amassing merchandise and crisscrossing Japan to attend "One Piece" events.