The One Piece Diary + Magic Pen set, reference OP00002, combines a licensed diary themed around the series with a matching pen. One Piece is one of the most popular Japanese manga and anime series of all time, created by Eiichiro Oda, with a large fanbase that follows the adventures of the pirate Monkey D. Luffy and his crew in their quest for the legendary treasure that gives the series its name. The magic pen changes color depending on the angle or pressure of writing, a playful effect that adds to the appeal of the series. It's a great option for anyone looking for a gift or school supplies that align with the tastes of a One Piece fan.