Most of the series takes place in a fictional version of Japan's Warring States period with occasional time-travel/flashback elements to modern Tokyo or the Heisei period.
Tsuki to Laika to Nosferatu: With Kôki Uchiyama, Megumi Hayashibara, Hina Kino, Takaya Hashi. In an alternate 1960s, a space program recruits a vampire to serve as an astronaut and go into space.