Those that were able to read it describe it as a monster movie where you are the monster. The game takes place in a high school rumored to have been the base of operations for a coven twelve years prior to the premier installment.
This "Witchcraft Club" practiced black magic in a storage room deep within the basement of the institute.
The story is about a boy whose parents took off after leaving him ten thousand dollars and with no home.
His aunt Chidori takes him in and tells him to choose one of her girls to marry.
The game gives you the option of choosing either Chidori, Hina who is there to learn how to manage her own family's restaurant, or Chidori's three daughters. /v/ might be more familiar with the flash game Nanaka Crash. Basically: Groundhog Day in a week-long loop, and without the characters being aware of it.
A novel in this page must have hentai/eroge-related content in it: if you are looking for other good novels (like Clannad, Ever 17 or Umineko no naku koro ni) try our Visual Novel Games page. There are no free novels in this list (except Katawa Shoujo), so if you want to play them you'll have to search for yourself (can't post those links on a wiki).
If you want free adult reading and don't care if it's Japanese, we have an Adult Interactive Fiction (AIF) section.