Mercedes and the Waning Moon Light Novel Series Greenlit for Anime Adaptation

Great news for isekai and dark fantasy fans! The light novel Mercedes and the Waning Moon—by Firehead with illustrations by KeG—is officially being developed as an anime.

8/11/20251 min read

Mercedes and the Waning Moon Light Novel Series Greenlit for Anime Adaptation

Great news for isekai and dark fantasy fans! The light novel Mercedes and the Waning Moon—by Firehead with illustrations by KeG—is officially being developed as an anime.

What’s the Story?

Mercedes and the Waning Moon follows Mercedes Grunewald, a reincarnated vampire noble girl born to a concubine. Facing the threat of being disinherited, she decides to chart her own path by dungeon crawling from a very young age—honing her strength and forming alliances with monsters along the way. Her goal? To find purpose, power, and perhaps emotional fulfillment that eluded her in her previous life. The series originally appeared as a web novel before being published in print by TO Books.

From Web to Animation

  • Announcement: The anime adaptation has been confirmed by TO Books, though details like the animation studio, voice cast, and premiere date are still under wraps.

  • Light Novel & Manga: Three volumes of the light novel have been published, with a fourth set to release soon. Meanwhile, a manga version illustrated by Pochi Edoya has also been running for several volumes.

  • English Availability: J-Novel Club offers both the light novel and manga in English, making it easier for international fans to catch up before the anime arrives.

Why the Adaptation Matters

This announcement marks a major milestone for Firehead's work. The story blends classical isekai elements with vampires, cunning strategy, and dungeon exploration—making it stand out amid the crowded genre.

What’s Next?

Fans can look forward to promotional updates in the coming months, including trailers and key visuals. With its compelling premise and growing popularity, Mercedes and the Waning Moon is well-positioned to become one of the most talked-about fantasy anime of the year.