Shiritsu! Sanjuusangen Dougakuin

is a Japanese light novel series written by Kei Sato, with illustrations by Kamiya Maneki. The series began publication on February 10, 2005 by ASCII Media Works under their Dengeki Bunko publishing imprint.

Synopsis
Noriyuki Shirakawa after his parents died and was taken over by the distantly related Senju Hanane's house. I was supposed to transfer to another school, but the school I transferred to was a girls' school until a while ago, and there was only one boy, Hogyo ...!?

Moreover, the student council president suddenly struck me seriously and approached Hogyo. The childhood friend who happened to meet again rebelled against such a chairman and formed a rebel army, causing a great uproar throughout the school! What to do !?