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".
Tsuredure Children
Wakabayashi originally started publishing the story online in 2012 without actually giving it a title; it became known simply as "Toshiya Wakabayashi's 4-koma comic collection". Afterward, it started serialization in Kodansha's Weekly Shōnen Magazine in 2015 with entirely redrawn art. The series ended in 2018, and has been collected into 12 tankōbon volumes. Kodansha USA has started digitally publishing an English version.