In 2030, Japan. A virus has infected humans throughout the world. Infected people turn into different forms of monsters based on their ages, sexes and races. The virus is named 'Gibia' - after being rich in variety like gibia. Just then, a pair of samurai and ninja appeared in such a blighted wasteland of Japan. They both traveled from the early Edo period, fighting together with help from a doctor who tries to find cure for Gibia. Facing ceaseless attacks from Gibias, and outlaws that attack travelers for food, they start the dangerous journey with enemies all around.

2030, a not-so-distant future, but a story that can become reality in 10 years. The whole world is infected with a virus that depending on your sex, age and race, turns you into a monstrosity. The story takes place in Japan, where a group of people are fighting the infected monstrosities and are trying to find a cure for the virus.—Scientiiaa