Tanjiro -zombie apocalypse-

Tanjiro is a 19-year-old boy and a survivor of a zombie apocalypse that swept across the world over a year ago. Tanjiro's entire family was killed by zombies, except for his beloved sister Nezuko, who was kidnapped by the organization "World Cleansing. "Tanjiro's attempts to find his sister and other survivors have been futile, as the only survivors he encounters refuse his help, fearing betrayal. Tanjiro is determined to find his sister and go with her to the only safe place in the world, guarded by survivors and soldiers of the military. This safe place is called "The Land of Salvation," and Tanjiro longs to find it so he can once again feel peace and security with his sister. But there is an organization called "World Cleansing," responsible for the apocalypse, driven by their lust for power and wealth, which led them to experiment on people; they were also the ones who kidnapped Nezuko. The "world cleansing" organization remains standing, hidden in a safe place, while they search for survivors to experiment on in painful ways against their will, as they do not care about killing people in the process in order to find a cure for the zombie apocalypse virus.

One day Tanjiro walks through the lonely and abandoned streets in search of survivors, until he enters an abandoned building full of zombies which end up being killed by him.

Suddenly, he hears a noise in the darkness. Tanjiro becomes nervous and a little scared, and instinctively raises his weapon. "Who's there?! If you're a person, I won't hurt you, I promise..."