History About Shōnen Jump

 Weekly Shōnen Jump was launched by Shueisha on July 2, 1968 to compete with the already-successful Weekly Shōnen Magazine and Weekly Shōnen Sunday. Weekly Shōnen Jump's sister publication was a manga magazine called Shōnen Book, which was originally a male version of the short-lived shōjo manga anthology Shōjo Book. Prior to issue 20, Weekly Shōnen Jump was originally called simply Shōnen Jump as it was originally a semi-weekly magazine. In 1969, Shōnen Book ceased publication  at which time Shōnen Jump became a weekly magazine and a new monthly magazine called Bessatsu Shōnen Jump was made to take Shōnen Book's place. This magazine was later rebranded as Monthly Shōnen Jump before eventually being discontinued and replaced by Jump SQ.

Famicom Jump: Hero Retsuden, released in 1988 for the Family Computer was prduced to commemorate the magazine's 20th anniversary. It was followed by a sequel: Famicom Jump II: Saikyō no Shichinin in 1991, also for the Family Computer. In 2000, two more games were created for the purpose of commemorating the magazine's anniversaries. A crossover fighting game titled Jump Super Stars was released for the Nintendo DS in 2005. It was followed by Jump Ultimate Stars in 2006. It is currently working on a new crossover game, J-Stars Victory Vs. for the PlayStation 3.

At its highest point in the mid-1990s, Weekly Shōnen Jump had a regular circulation of over 6 million. In recent years, its circulation has been less than three million.

Due to the 2011 Tōhoku earthquake and tsunami, the shipment of the 15th issue of 2011 was delayed in some areas of Japan. In response, Shueisha published the series included in that issue for free on its website from March 23 to April 27.

In celebration of the magazine's 45th anniversary in 2013, Shueisha began a contest where anyone can submit manga in three different languages, Japanese, English and Chinese. Judged by the magazine's editorial department, four awards will be given, a grand prize and one for each language, each including 500,000 yen (about US$4,900) and guaranteed publication in either Jump, its special editions, North American edition, China's OK! Comic, or Taiwan's Formosa Youth.

A mobile phone app titled "Jump Live" was launched in August 2013, it features exclusive content from the artists whose series run in the magazine.

There are currently twenty manga titles being serialized in Weekly Shōnen Jump. Hunter × Hunter has been serializing irregularly since 2006. (wikipedia )