The Vampire(?) Detective and the Case of the Lying Maid

The Vampire(?) Detective and the Case of the Lying Maid (2023): Visual Novel. Developed by omure. Available on Linux, PC (Microsoft Windows), and Mac.

Enid had a crush on her eccentric lady Olivia for as long as she can remember, but she'll rather die than admit it. One day, she's summoned to Olivia's study for an unclear reason...