2006 November 17, Seimaru Amagi with Sato, Fumiya, “獄門塾殺人事件1 [The Prison Gate Cram School Murder Case #1]”, in 獄門塾殺人事件(上) [The Prison Gate Cram School Murder Case (First Book)] (金田一少年の事件簿) (fiction), Tokyo: Kodansha, →ISBN:
Ā!“Gokumon-juku” daro? Honto wa gakumon o kiwameru tte iu imi no “Gokumon” rashii n da kedo anmari Suparuta na n de kotchi no “Gokumon”tte kage de wa iwareteru n da!
Oh! You mean “Gokumon Cram School”? “Gokumon” actually means something like ‘studying a field deeply’, but people just go with “Gokumon” as in ‘prison gate’ because of its harsh conditions!