Blood Is Redder Than the Sun.

A high school student preparing for his university entrance exams is discontent with various social inequities and is determined to take vengeance on all adults. According to the press information accompanying a 2005 retrospective of Kōji Wakamatsu‘s films, the individuals using the “Yoshiaki Ōtani” pseudonym for the screenwriter credit on this film are Yasuaki Hangai and Mikio Terashima.