The Ebisugawa High School astronomy club, now renamed Asstronomy, is one full of mayhem, as the real world and fantasy are frequently combined by its members, who include borderline delusional leader Kyoko Todayama, yayoi dojinshi fan and cosplayer Hakata Kanamori, unemotional and cat fetishist Rikei Hiromatsu, and polite, level-headed Hasumi Oba. Thinking it's a serious astronomy club, prospective member Itsuki Noya is given a strange test for acceptance.
