Mercedes and the Waning Moon Anime Adaptation Announced for Winter 2027

The dark fantasy isekai landscape is welcoming a fierce new young protagonist. The official website for the anime adaptation of Firehead’s acclaimed light novel series, Mercedes and the Waning Moon: The Dungeoneering Feats of a Discarded Vampire Aristocrat, has officially released its very first teaser trailer. The visual showcase confirmed that the upcoming television production will premiere in January 2027. Animation production is being spearheaded by the rising team at Studio Teddy, known for their high-quality work on fantasy sequels like I’ve Been Killing Slimes for 300 Years and Maxed Out My Level Season 2.

Mercedes and the Waning Moon Key Information

• Original Author: Firehead
• Original Illustrator: KeG
• Animation Studio: Studio Teddy
• Release Window: January 2027
• Original Publisher: TO Books
• English Publisher: J-Novel Club
• Genre: Isekai, Dark Fantasy, Dungeon Crawler

What Is the Plot of Mercedes and the Waning Moon?

The story introduces us to Mercedes Grunewald, a young girl who is the reincarnation of a Japanese person who died with deep, unfulfilled regrets in her past life. Reborn into a new world as a half-vampire, she is the daughter of a powerful nobleman and his shunned concubine. Knowing from a very young age that her father will inevitably choose a legitimate heir to succeed him, Mercedes realizes that she, her unskilled mother, and their aging maid face a bleak future of abandonment.

Unwilling to let her family starve, Mercedes decides to take her destiny into her own hands. Because she hails from a powerful nation of vampires, she possesses immense latent magical and physical potential. Even though she is barely the age of a kindergartener, she begins rigorous combat training to become a professional dungeon explorer. The dungeons are dangerous, but they offer wealth, power, and a clean slate for a discarded aristocrat determined to find a purpose that will make her waning moon completely full.

Who Is the Production Team and Cast Behind the Anime?

To bring this detailed dungeon-crawling epic to life, Studio Teddy has assembled a line-up of seasoned anime industry veterans:

• Director Kunihisa Sugishima: A prolific directorial talent praised for handling massive, high-stakes action series including Yu-Gi-Oh! Duel Monsters, Beyblade: Metal Fury, and Strike Witches.
• Screenwriter Jun Kumagai: Managing the series composition, Kumagai’s impressive scriptwriting portfolio includes Persona 4 the Golden Animation, Teppen!!! Laughing ’til you Cry, and Aquarion Logos.
• Character Designer Nami Shoyama: Shoyama brings the distinct, expressive character designs to the screen, drawing from previous success on hit titles like Buddy Daddies, Yu-Gi-Oh! Go Rush!!, and Yu-Gi-Oh! Sevens.

For the central character, the production has cast rising star Anna Nagase to voice Mercedes Grunewald. Nagase is highly regarded within the anime community for her incredible, breakout vocal performances as Riko Amanai in Jujutsu Kaisen Season 2 and the titular heroine in Summer Time Rendering.

Where Can You Read the Original Series Ahead of the Premiere?

Mercedes and the Waning Moon originally began its life as a popular web novel on the independent platform Shosetsuka ni Naro back in October 2018. Following massive reader engagement, Japanese publisher TO Books acquired the literary rights, transitioning the story into a light novel format in May 2021 with beautiful illustrations by KeG.

Due to the continuous success of the novels, a direct manga adaptation illustrated by Pochi Edoya began serialization on the Comic Corona website in August 2021. For global fans looking to read ahead of the January 2027 broadcast, the digital publishing platform J-Novel Club has officially licensed and translated both the original light novels and the action-packed manga volumes for English-speaking territories.

Anime fans can expect the series to stream globally on dedicated platforms such as Crunchyroll as the promotional cycle ramps up closer to the winter premiere window.