I should probably explain how such a character as Yoku appeared.
He is a companion for the female main character of my story titled "The Cat". In small (~1000 words each) stories I depict the life of a werewolf girl Tairi.
Yoku is a vampire, and they've got acquainted mostly by accident: the Cat had saved him from a cruel execution, and he promptly told her she was now responsible for his life because of that. Earlier he wanted to die, having lived a long life and craving for common human existence. Yoku was nicknamed the Orphan for his habit of adopting orphans — not turning them to vampires. In due time he eventually had to bury his