A series which ran from the second issue of Hirari up until the last (issue 14), and which continued to be published irregularly online in Web Wings: http://www.shinshokan.com/webwings/title43.html

Continued in https://dynasty-scans.com/series/yamada_to_kase_san

Currently untranslated chapters include:

4-koma
Summer and Kase-san (released online)