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".
Reborn!
A book, "Katekyō Hitman Reborn! Official Character Book Vongola 77", was published on October 4, 2007, in Japan. Based on the manga, it covers 77 incidents since Reborn joined the Sawada household. The book profiles major characters, with brief side stories not appearing in the manga and color posters by Akira Amano. "Katekyō Hitman Reborn! Sōshūhen: Vongola Family", a book focusing on Tsuna, Reborn and Tsuna's Guardians was released on October 30, 2009. On April 2, 2010 an artbook, "Reborn Colore!", was published.