In 1966 Japan, half-vampire Saya hunts Chiropterans—bat-like demons infiltrating a U.S. military base. Posing as a student, she clashes with these shape-shifting horrors while protecting nurse Makiho, a witness to the carnage. Amidst Cold War tensions, the mission crescendos in a blood-soaked showdown, leaving authorities to erase all evidence. Saya vanishes, her origins hinted at through a cryptic 19th-century photo labeled “VAMPIRE,” teasing her eternal vigil.
In a vampiric society plagued by serial murders, aristocrat Dali Delico refuses to lead investigations unless his three friends care for his children. Their estate becomes both a nursery and detective base, blending childcare chaos with solving crimes tied to cryptic "True of Vamp" cards. As the team uncovers a criminal organization’s plot, they balance parenting toddlers and unraveling conspiracies. Themes of sacrifice, family, and hidden threats drive this genre-blending mystery.
After being publicly kicked from her streaming group, Sonoue Masaki's career seems doomed until she meets Live, a vampire with an unusual obsession with her. They strike a deal: Live's help for Masaki's blood. Together with other vampires, they embark on a journey to reach a million subscribers, transforming what begins as a comedic streaming adventure into a touching story of growth and friendship.