Wish～終わりゆく世界で～

The year is 20xx... A new life form called a "Mamono" has suddenly appeared in Japan.
With great sacrifice, the Japanese government finally succeeds in retrieving a part of this "Mamono." Of course, it's kept secret from the general public and all evidence is eliminated...

Soon after, the government takes a few civilian scientists and begins a top-secret mission called "Project HI" (Project Human Infinity). The project's purpose is to somehow inject the unknown virus from the "Mamono," which will give the subjects super powers. The goal is to create a human that will withstand any kind of environment, which will then be used as a lethal weapon. Knowing the project might fail, the government simultaneously creates a militia known as the "Witch Hunters."