Uta Episode 7: Yofukashi No

A mysterious woman later associated with Nazuna's past.

It becomes clear that Nazuna is an outlier among her kind; while other vampires are popular and social, she is a loner who prefers video games over the traditional "hunt". Yofukashi no Uta Episode 7

The episode establishes that vampires must "multiply" by making humans fall in love with them, turning the concept of romance into a survival strategy. A mysterious woman later associated with Nazuna's past

The group's "spokeswoman" and an evening school teacher. The group's "spokeswoman" and an evening school teacher

A more reserved vampire who notably does not try to seduce Ko like the others. The Ultimate Choice

The group presents Ko with a lethal ultimatum: he must choose one of them to turn him into a vampire, or they will have to kill him to protect their secrets. In a defining moment for his character, Ko rejects their "easy" routes—which they treat as a game—and declares his loyalty to Nazuna. This surprises the group, as they consider Nazuna a "black sheep" who is particularly bad at the romance required for successful reproduction.

The new vampires represent a cynical view of love as a facade used for feeding, contrasting with Ko's earnest (if awkward) attempt to find a meaningful bond.