Kazumasa Hirai
Writing
Known For

Private detective Hazama Itsuru is hired by Professor Tani to investigate a cyborg parts theft which eventually leads him to meet Sachiko Yokogawa, the original 8 Man's love interest. Living her new life working for the Biotecho Corp., Sachiko finds herself involved with a new 8 Man, who appears after Hazama is fatally wounded by an unknown cyborg. Amidst a violent urban background with cyber-junkies creating chaos around the city, this other 8 Man will fight criminals in a more aggressive way.
8 Man After

From the depths of space he is coming... Ancient beyond understanding, his power is immeasurable. He has destroyed half the universe and is on his way here. He is… Genma. Only two people are aware of the imminent catastrophe: Princess Luna, a modern day prophetess and Vega, a cybernetic crusader from a world long since ravaged by Genma. Determined to spare the Earth from a similar fate, Luna and Vega must try to mobilize the most potent psychics in the world. Together, this army of fledging psychic warriors must succeed where billions have tried... and failed. But will they be able to gather their champions in time? Genma’s agents are already on Earth to ensure that their master meets with no opposition!
Harmagedon
No description available.
宇宙人ピピ

Akira Inugami is the only survivor of a clan of ancient werewolves who relies on his supernatural powers to solve mysterious crimes. After a series of bloody killings perpetrated by an unseen force, Inugami uncovers a conspiracy involving a murdered cabaret singer, corrupt politicians, and a plot by the J-CIA to harvest his blood in order to steal his lycanthropic powers.
Wolf Guy

A police officer working a routine case is hit by a car and mortally wounded. He is saved by a professor that transfers his consciousness into a powerful cyborg crime-fighter. Resurrected as the ultimate high-tech vigilante, it is up to 8Man to bring the lawless to justice and put an end to the escalating cycle of violence.
Eightman

Enigmatic teenager Akira Inugami is, by night, a powerful werewolf, who falls for a beautiful young teacher, and copes with a ruthless teen gang leader, whose yakuza father murdered Akira's parents years before.
Horror of the Wolf

Akira lnugami is infected with a terrible poison, and the only known antidote has an unfortunate side effect – it turns him into a werewolf. He opts for survival but then has to cope with his new desires and with the attention of the military, which is interested in using his affliction for its own purposes.
Wolf Guy

After Tokyo police officer Yokoda is killed in the line of duty, his chief decides give Yokoda's body to Dr. Tani for use in a secret scientific experiment: Yokoda's brain will be transplanted into a super-powered robot body, making him into an unstoppable policeman of the future. The supercop develops problems, however, when he begins to remember his human past. Then there is the matter of Dr. Tani's other cyborg, who has become a super-powered homicidal maniac.
8 Man - For All Lonely Nights

A private investigator working a routine case involving stolen technology is mortally wounded. His only hope for survival comes from sacrificing his humanity to become 8man – a powerful cyborg crime-fighter enhanced with a living human brain. Resurrected as the ultimate high-tech vigilante, it is up to 8man to bring the lawless to justice and put an end to the escalating cycle of violence. This is the version cut into a single film by Streamline Pictures.
8 Man After

A short film made up of Episodes 9 through 10 of the 8th Man anime series. The film premiered at the first iteration of the Toei Manga Festival "Manga Grand Parade".