Lime-iro Senkitan: Amanohara Gakkyuu Nisshi (Light Novel)

is the light novel spin-off based on the PC and PS2 game Lime-Iro Senkitan. It was written by Satoru Akahori and Illustrated by Mayumi Watanabe. It was released under the Dengeki Bunko Imprint in June 2004.

Synopsis
The time is Meiji. The place is "Amanohara Jogakuin" which was established in a flying battleship. There were five pretty female students and a merciless but kind-hearted male teacher. Schoolgirls love teachers. One day, I started to think "I want to monopolize the teacher" ... An extra novel from the popular anime "Lime-iro Senkitan" is now available. A battle between girls begins over the seat of teacher Shintaro's lover !? You can see all ten episodes full of gag and Kiwadoi sex appeal scenes.

(source: Amazon JP - Translated)