Did You Know?
An outbreak of E. Coli in Osaka at the time of filming made it difficult to secure a number of locations, such as the swimming pool (shot at the Osaka YMCA) or the scene involving Kunihiro's roommate found dead in the river. For the latter scene, the actor would only enter the water after wrapping himself from the waist down in food-service film. (The water leaked in anyway.) See more
Referenced in Ban the Sadist Videos!