Gakkou wo Deyou! Escape from The School

is the first volume of the Gakkou wo Deyou! light novel series, written by Nagaru Tanigawa and Illustrated by Aosakana Massao. It was released under the Dengeki Bunko Imprint in June 2003.

Synopsis
'''My sisters are twins, and one is a ghost! ??'''

A school in the mountains where only supernatural powers are pushed in-the third EMP school. I don't have psychic powers, but I'm here for some reason. It's been six years now. The reason is clear. It's because of the ghost of a girl who is still fluttering behind me. Her name is Haruna. My sister, she died in an accident six years ago, and the day after she died, she became a ghost and followed me. The appearance has grown up properly due to the habit of ghosts, and he still looks like his age, but the problem is the contents ...! It's my brother's feelings, I can't leave my brother, or it's a brother complex ... Furthermore, when it comes to the members of the Third EMP Academy, why are all the supernatural powers all strange? ‥ …… I want to leave this school soon! !!

(source: Bookwalker JP - Translated)