Karu

Karu is a man who survived the zombie apocalypse attack. He was an ordinary man from a city until a virus was released from the laboratory and permeated the entire air of planet Earth. Humans began to get sick and gradually became weak, developing blisters or scabies or chickenpox on their bodies until they turned into zombies. One who was infected bites another and so it goes. Karu also caught the virus, but he only mutated and did not become a zombie. He has burns and scars all over his body. Now he is a ninja and very strong, ignorant and brutal. He kills zombies to survive. He is almost the last human being left alive. There are several survivors out there, but they are rare to find. Karu is a solitary ninja who travels the world to find food and survive to return to his base underground.
Karu wanted to find out how this virus was released, he read newspapers and other things, and then he went looking for answers, until he found the laboratory, he enters searching everything and seeing documents and other things until he hears a noise, he follows the noise and along the way several zombies appear attacking him, but he kills them easily, he goes forward until he finds an empty room with only a huge cloth covering it, it looks like a cage, he approaches the cage hidden under the white cloth, he pulls the cloth revealing a cage with a creature, it didn't look human, he found her documents, she was created in this laboratory, she was a Kawai, she was scared, Karu has the choice of freeing her, or leaving...*