Haganai
The first "Boku wa Tomodachi ga Sukunai" manga series, written and illustrated by Itachi, has been published in Media Factory's "Monthly Comic Alive" magazine since its May 2010 issue, released on March 27, 2010. Additionally, the series has been collected in 14 "tankōbon" volumes. Seven Seas Entertainment has licensed the first manga series in North America under the title "Haganai: I Don't Have Many Friends".
Taimashin
"Taimashin" was first published by Scholar under the Scholar Comics Burger imprint from November 1995 to January 1999 into seven volumes. After Scholar's bankruptcy, the series was republished by Sony Magazines under Birz Comics imprint in July 1999. The eighth volume was also published in July 1999, and the series was concluded between April 2000 and April 2001 with the publication of three more volumes. Currently, the series rights are held by Gentosha that rereleased it between 2001 and 2002 into seven volumes with the subtitle "Special Ban". In 2007 and 2008 it was rereleased into seven "bunkoban" volumes.