Proper Japanese Title: ビッグコミックスピリッツ (Biggu Komikku Supirittsu)
Weekly Japanese seinen manga magazine, originally the magazine was published monthly and then switched to twice a month and then settled on weekly. A companion magazine also exists called Monthly Big Comic Spirits.
Note: Each weekly issue is given a number along with the year, some weeks are double issues, for the weekly issues the numbering is set up as year and then number, the first week of 2013 would be 201301, for double issues a dash will be used i.e. 201304-05.