Gekkou Majutsu-dan

is a Japanese light novel series written by Kazumasa Hirai, with illustrations by Ayumi Izumitani. The series began publication on May 10, 1999 by ASCII Media Works under their Dengeki Bunko publishing imprint.

Synopsis
"If you want to be so unhappy with me, you can't help it." Since the lion-haired beautiful girl Inugami Mei moved in, Hitomi's school life has changed completely. Hitomi, a born volunteer who can run for the student council president nowadays, cannot leave the unfamiliar Mei alone, and is involved in troubles caused by Mei one after another. Inugami Mei, a super-dangerous person who has no respect for common sense or order, had a big secret. An unimaginable crisis approaches in front of Hitomi who is attracted to Mei.