Asura Cryin'

is a Japanese light novel series written by Gakuto Mikumo, with illustrations by Watanuki Nao. The series began publication on July 10, 2005 by ASCII Media Works under their Dengeki Bunko publishing imprint.

Synopsis
Natsume Tomoharu is a normal high-school student in every way with one exception: he's being followed by the ghost of his best friend, Misao.

After moving into his brother's old house, Tomoharu expects to continue living his normal life but is one day left with a mysterious and locked briefcase without any instruction. At first he plans to leave it in storage; however, his house is soon invaded by multiple groups of people after the briefcase. Although still not knowing the purpose of the briefcase, Tomoharu and Misao attempt to escape with it.

From there on, Tomoharu tries to learn the secrets behind the briefcase, the connections between it and Misao, and why it has the power to change the world.

Asura Cryin'
An anime adaptation of the light novel aired for 13 episodes between April 2, 2009 and June 25, 2009.

Asura Cryin' 2
The second season of the anime that adapted the light novel. It aired for 13 episodes between October 1, 2009 and December 24, 2009.