, also written as , is a Japanese monthly shōnen manga magazine. Published by Shueisha, the magazine premiered on November 2, 2007 as a replacement for Monthly Shōnen Jump, another manga anthology that Shueisha discontinued in June of that year. The magazine is a part of the Jump line of magazines. The manga titles serialized in the magazine are also published in tankōbon volumes under the Jump Comics SQ. imprint. Shueisha reported from their sales pole that readers of Jump Square tend to range from 15 to 34 years of age. The current (2015) editor-in-chief is Kôsuke Yahagi. History Jump SQ, also called Jump Square, was created as the replacement for Shueisha's canceled Monthly Shōnen Jump manga anthology. The title has three stated meanings: public square ("a plaza where comic lovers and talented artists and writers come together"), algebraic square (Weekly Shōnen Jump²), and "SQ = Supreme Quality" (referring to its "Supreme Quality Manga Magazine" motto). Four manga serials were temporarily moved to Weekly Shōnen Jump, until Jump Square's release. These four series, Tegami Bachi, Rosario + Vampire, Claymore, and Gag Manga Biyori were among the magazine's premiere series, along with debuting series, including Embalming -The Another Tale of Frankenstein-, Kure-nai, and Dragonaut: The Resonance. Circulation When Jump Square was launched, the initial printing of 500,000 copies quickly sold out. Over 70% of the copies released across Japan sold within three days. Shueisha printed an additional 100,000 copies to help meet the demand, something normally not necessary with Japanese magazines. The second issue also sold well, requiring a second printing of 60,000 copies. After the first issue excitement died down, circulation leveled off in the vicinity of 370,000 copies and by 2015 had declined to 270,000, mirroring a general drop-off in circulation throughout the industry. Features Jump Square's primary content is manga serials. In addition to the manga series, some issues include serialized light novel chapters from works published by the Jump j-Books label. One-shots from established manga writers are featured in a section of the magazine called the , while pieces from up-and-coming writers occasionally appear in the section. Series There are currently twenty manga titles being regularly serialized in Jump Square. Special issues Jump SQ.II short for , is a spin-off issue of Jump SQ of which three volumes have currently been published, beginning on April 18, 2008. The first issue featured the collaborative effort between American comic