Between June and August 2004, Ohzora also released five separate volumes of manga based on "Kanon" drawn by five separate artists. Ohzora later collected some of the previously published manga anthologies into two volumes titled "Kanon Anthology Comics Best Selection" released in December 2006 and January 2007. Additionally, Ohzora released another 13 volumes of an anthology series titled "Kanon" under their "Twin Heart Comics" label. The now-bankrupt publisher Raporto also released 21 manga anthology volumes titled "Kanon" under their "Raporto Comics" label between November 2000 and October 2002. The last manga anthology, a collection of four-panel comic strips released in a single volume by Enterbrain titled "Magi-Cu 4-koma Kanon", was released in January 2007 under their "MC Comics" label. Each of the anthology series are written and drawn by an average of 20 people per volume.