The Blood Donor:

Kazuo Shimura was a reasonably tall, Japanese man who worked as a stock broker in Tokyo. His features were refined and modest and he had no reason to appear suspicious. However, Kazuo had a perverted passion for stealing other people's blood. By day, he was a hard-nosed capitalist who invested in high-performance stock markets and gained a decent amount of profit. The money he gained from this risky business resulted in the purchase of excessive amounts of blood-grabbing materials such as syringes, needles, blood bags, and fake identification badges to get access to top Tokyo hospitals.

One day, Kazuo decided to take a break from stealing blood and used the latest cut of his profits in order to treat himself to a five-star meal at a swanky meat restaurant downtown. He swiftly waltzed into the restaurant, introducing himself and quickly being escorted to a seat. This was a restaurant for high-flyers, businessmen who had more money than Bill Gates and yet spent very little on anything but the finest food in Japan. He ordered red meat. After having stared at the Tokyo skyline through the window for several minutes, Kazuo received his food and slowly began to pick at the tender, red, oozing meat. He savoured every last bite of this meal. He enjoyed the break from his regular blood-stealing routine.

His obsession with blood was intense, so much so that Kazuo would make himself bleed in order to satisfy his personal blood bank. The whole repetitive scenario had started way back when he was five years old, when he had witnessed an awful, bloody murder in a hidden alleyway in Osaka, his hometown. Instead of reporting the incident to the police, Kazuo simply watched as the drunken men attacked a helpless woman on her way home from her job at a local karaoke bar in the city. She was stabbed several times before one of the men bit off her ear and licked out the blood. Kazuo had seen it all and you could call it trauma, but from that moment, blood became his life. Everyone needed blood inside them, but he craved it more than most, a natural thirst, like that of a vampire. He did not need blood to survive, it was not his food. Blood simply acted as a means to satisfy him, like sex. Blood was, in a sense, his aphrodisiac.