Mantarou

Japanese: 漫太郎

Release Date: Annually (April)
Circulation: 2006/04 - 2008/04

Publisher: Shueisha

Info:

Weekly Young Jump special issue. Its first issue was released on April 11th, 2006. The second issue was released on April 3rd, 2007 and titled "Mantarou 2007". The third issue was released on April 22nd, 2008 and titled "Mankaku Rookies".