In a school where after school activities are mandatory among all students, Hajime and her friend Sayo come across a new club that they have never seen before. The club is called "The Cultural Activity Preservation Club." The two enter the room to find all kinds of analog jobs and activities, such as handcrafting mats and toothpicks. This is a unique cultural manga mixed with comedy so as not to bore you, this is Double J!
(Source: Mangahelpers)

Ladies and Gentlemen, meet Yagami-san, the only section chief you would never want to work with, unless you like the kind of stupid guy who got where he is by a gigantic cosmic error in the arrangement of the stars on the recruitment day.

A spin-off/sequel of Sakigake!! Cromartie Koukou which focuses on the school's teachers and their antics.