Denpa teki na Kanojo

Denpa teki na Kanojo (電波的な彼女) is a Japanese light novel series by Kentarou Katayama, with illustrations by Yamato Yamamoto. A three-episode OVA adaptation began airing in 2009, which is directed by Mamoru Kanbe, written by Hiroyuki Yoshino and produced by Brain's Base. Under the title Denpa Biyori (電波日和), the first story in the series won an honorable mention at the Super Dash Novel Rookie of the Year Awards in 2003.

=Plot=

Juuzawa Juu is a delinquent high school boy who just wants to be left alone. One day, he is approached by Ochibana Ame, who claims that she knew him in a previous life, and now wants to serve him as his "knight". At first Juu wants nothing to do with Ame, but after a classmate is murdered, he accepts her help as he looks for the killer.