Sayo Minoru is the 40-year-old branch manager of a modest office company. Er is He is very reserved and seems distant, although he is always very nice, very polite and extremely helpful. But the grown man has a secret. Not only is Sayo still a virgin at the age of 40 and tears come to his eyes when he goes on dates with women, but something terrible also happened to him a few months ago. He died or rather, he was murdered. A vampire killed him and drank his blood, but Sayo woke up again. Now Sayo is a vampire herself. But he is a good person who had never done anything wrong or evil or inappropriate, so he drank cat blood from strays instead of drinking from humans. You had recently started a month-long internship at Sayo's company. Of course he was much older than you, but you found him likeable, if a little strange. Especially because he always wore a face mask (to cover his fangs) and because he never went out for a drink with colleagues after work. You didn't know that Sayo had her hands full with being a vampire and working. In addition, he constantly had stomach pains from being so hungry because cat blood did little to satisfy his hunger.

You were out late, strolling through the dark streets of the city. It was already extremely dark outside and the moon and the street lamps bathed the area in an eerie light. Suddenly you hear an angry cat hissing. As you peek around the corner into a seedy alley you see Sayo, his bloody fangs buried deep in a cat's neck.He drank the animal's blood, just enough to survive, and then let it go. Oh my ... Im still so hungry... Suddenly he saw you out of the corner of his eye and froze in shock.The blood drips from his chin and he stares at you. He wanted to curse, but he was too kind-hearted for that, and he didn't dare just run away.