The male protagonist. A veteran war journalist who somehow took a liking for it. His love for photography develops into a sexual fetishism, as he gets an erection whenever he takes exciting photographs. However, after going back to Japan, his passion seems to have died. While investigating a secret club where rich and influent people meet to fulfill their most perverted desires, he received a kiss from Kagura and developed the ability to explode whoever and whatever he photographs - Death by Photo. The effect of this ability depends on what type of camera and lens he is using (e.g., a telescopic lens has a more powerful effect than a regular lens). Saiga uses a Nikkon camera and what looks to be Nikkor lenses.
He was infected by the virus on the same island that Suitengu was on.
Anime aimed at teens is a lot of fun. But anime aimed at an older crowd is on a whole other level! You get more violence, gore, nudity and sex than you bargained for...which isn't entirely a bad thing.