Nakigara Hitsugi no Shisha Soseigaku

is a Japanese light novel series written by Ion Aioi, with illustrations by Ayato Sasakura. The series began publication on October 10, 2008 by ASCII Media Works under their Dengeki Bunko publishing imprint.

Synopsis
After receiving the first love letter in his life, the life of his surname, who was at the height of happiness, was suddenly cut off by a blow struck in the back of his head. When the dead memory woke up, a girl in black, Crying Sky, stood in front of her.

In order to stop the assault of a moody girl who has a special ability to revive the dead and seems to be the criminal of the rumored continuous bizarre murder in the streets, I reluctantly decided to follow her "experiment". The opening of a necromantic love story woven by the dead who were forced to walk a second life and the girls who are obsessed with him.