One Piece Knowledge King

One Piece Knowledge King Deciding Battle is an annual examination event hosted by Shueisha and Eiichiro Oda where fans can test their knowledge of the One Piece manga.

Information
The online exam consists of 100 questions from four genres: story, character, techniques, and culture. The exam is one hour long, and participants who score 90 points or more in the 100 regular questions will be given additional, more difficult questions. Questions will draw from One Piece Volumes 1-97 and Vivre Card - One Piece Visual Dictionary. There are four types of questions:
 * One answer per question: a question where participants select one answer from four options
 * Multiple answer questions: a question where participants choose more than one correct answer from four options
 * Sorting: a question where participants put four items in the correct order in a list
 * Free answer: a question where participants are asked to write out an answer

After taking the exam, fans will receive a report card that analyzes their exam results.

2019
The winner of the first Knowledge King Deciding Battle was Ryota. The exam is now referred to as Knowledge King Ryota (ナレッジキングリョウタ) after its winner.

The 1st Knowledge King Deciding Battle has been made available for anyone to take on the official website.

2020
The pre-registration phase of the 2nd Knowledge King Deciding Battle runs from July 20, 2020 to October 24, 2020. The Deciding Battle exam takes place October 25 at 19:00.

The winner will receive a trophy, but its design will differ from the 2019 statue. The top ten participants, as well as the top eleven participants from the first competition, will be invited to Jump Festa 2021 to participate in the Final Stage Summit War (ファイナルステージ頂上戦争) to decide the official Knowledge King (ナレッジキング).

Participants under the junior high school level will be separated into their own ranking, and the top ten among them will each receive a prize.