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".
Tsubasa: Reservoir Chronicle
Two character guides were released by Kodansha in Japan and then translated and released in North American by Del Rey Manga. They contain overviews of the worlds, overviews of characters, fan reports, illustrations, and interviews. The was released on April 15, 2005, covering events from volume 1 to volume 7. It was released in English on December 26, 2006. The was released on October 17, 2006. It was released in English on October 13, 2009. Another related book is which was released by Kodansha on July 17, 2004. It is set prior to the events of "xxxHolic" and "Tsubasa" and tells the lives from the two Mokona Modoki ever since their creation by Clow Reed and Yūko Ichihara.