Unknown to the world, aliens have begun to invade people's bodies. A young race car driver named Toshio was contracted by a mysterious organization for a "test" for money. That test turned out to be a hellish training to become a Zombie Hunter. Toshio decided to return to a normal life instead, but soon was confronted by the harsh reality of a Zombie Hunter. Surrounded by shallow figures and aliens, Toshio accepts his new life as a Zombie Hunter ...

(mangaka never finished the story)

A high-school student named Yu Komori is bitten by a radioactive spider, which gave him spider-like powers. Yu faces Japanese versions of villains such as Electro, the Lizard and the Kangaroo. Yu also has an Aunt May (her name is "Mei"), and the publisher of the Joho newspaper is a counterpart to J. Jonah Jameson.

Note: 7 out of the 13 Japanese stories in total were fully translated by Marvel, with heavy edits to remove the violent scenes. After that the title was cancelled, which was a likely decision by Marvel since the stories written by Hirai departed even further from the source material, and included scenes of sexual and gruesome imagery of a kind not seen in the original US comic.

This is an adaptation of three episodes of the "Adult Wolf Guy" novel series titled "Tsuki to Yoru to Oogami" (月と夜と狼, vol.1), "Oogami wa Shinazu" (狼は死なず, vol.1) and "Jinrou, Akatsuki ni Shisu" (人狼、暁に死す, vol.5).