Weekly Shonen Jump
Weekly Shonen Jump was launched by Shueisha on July 2, 1968, to compete with the already-successful Weekly Shonen Magazine and Weekly Shonen 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 Shonen Jump was originally called simply Shōnen Jump as it was originally a bi-weekly magazine. In 1969, Shōnen Book ceased publication at which time Shōnen Jump became a weekly magazine and a new monthly magazine called Bessatsu Shonen 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.