Mercedes and the Waning Moon

Mercedes and the Waning Moon: The Dungeoneering Feats of a Discarded Vampire Aristocrat
First light novel volume cover
欠けた月のメルセデス～吸血鬼の貴族に転生したけど捨てられそうなのでダンジョンを制覇する～
(Kaketa Tsuki no Merusedesu: Kyūketsuki no Kizoku ni Tensei Shitakedo Suterare Sōnanode Danjon o Seiha Suru)
GenreIsekai
Novel series
Written byFirehead
Published byShōsetsuka ni Narō
Original runOctober 1, 2018 – November 6, 2022
Light novel
Written byFirehead
Illustrated byKeG
Published byTO Books
English publisher
ImprintTO Bunko
Original runMay 10, 2021 – present
Volumes5
Manga
Written byFirehead
Illustrated byPochi Edoya
Published byTO Books
English publisher
  • NA: J-Novel Club
ImprintCorona Comics
MagazineComic Corona
Original runAugust 23, 2021 – present
Volumes6
Anime television series
Directed byKunihisa Sugishima
Written byJun Kumagai
Music by
StudioTeddy
Original run January 2027 – scheduled

Mercedes and the Waning Moon: The Dungeoneering Feats of a Discarded Vampire Aristocrat[a] is a Japanese light novel series written by Firehead and illustrated by KeG. The series was originally serialized on the online service Shōsetsuka ni Narō from October 2018 to November 2022, before TO Books acquired it for publication beginning in May 2021. Five volumes have been released as of July 2026. A manga adaptation illustrated by Pochi Edoya began serialization on TO Books's Comic Corona website in August 2021, and has been compiled into six tankōbon volumes as of July 2026. An anime television series adaptation produced by Teddy is set to premiere in January 2027.

Plot

The series follows Mercedes Grunewald, a vampire woman and the reincarnation of a Japanese person who died in a past life with regrets. She lives in the countryside with her mother, who was forced away by her father after a falling out. Although of noble descendent, she is left out of his line of succession due to being born to a concubine. With an unclear future, she decides to become a dungeon crawler to gain strength and wealth.

Characters

Mercedes Grunewald (メルセデス・グリューネヴァルト, Merusedesu Guryūnevaruto)
Voiced by: Anna Nagase[1]

Media

Light novel

The series is written by Firehead, who originally posted it as a web novel on the online service Shōsetsuka ni Narō from October 1, 2018, to November 6, 2022.[2] It was later acquired for publication by TO Books, which began publishing it as a light novel on May 10, 2021.[3] Five volumes have released as of July 2026.[4] The series is licensed in English by J-Novel Club.[5]

No. Original release date Original ISBN North American release date North American ISBN
1May 10, 2021[3]978-4-86699-216-7February 12, 2025[6]978-1-7183-0816-9
2November 20, 2021[7]978-4-86699-372-0June 16, 2025[6]978-1-7183-0818-3
3February 19, 2022[8]978-4-86699-457-4September 22, 2025[6]978-1-7183-0820-6
4August 15, 2025[9]978-4-86794-669-5February 13, 2026[6]978-1-7183-0824-4
5July 15, 2026[4]978-4-86854-071-7——

Manga

A manga adaptation illustrated by Pochi Edoya began serialization on TO Books's Comic Corona website on August 23, 2021.[10][11] The first tankōbon volume was released on December 15, 2021;[12][13] six volumes have been released as of July 2026.[14] The manga adaptation is also licensed in English by J-Novel Club.[15]

No. Original release date Original ISBN North American release date North American ISBN
1December 15, 2021[13]978-4-86699-391-1January 29, 2025[15]978-1-7183-2658-3
2October 15, 2022[16]978-4-86699-696-7April 16, 2025[15]978-1-7183-2659-0
3August 15, 2023[17]978-4-86699-921-0June 11, 2025[15]978-1-7183-2660-6
4September 2, 2024[18]978-4-86794-295-6November 12, 2025[15]978-1-7183-2661-3
5August 15, 2025[19]978-4-86794-658-9August 5, 2026[15]978-1-7183-2662-0
6July 15, 2026[14]978-4-86854-040-3——

Anime

An anime adaptation was announced on August 7, 2025.[20] It was later revealed to be a television series that will be produced by Teddy and directed by Kunihisa Sugishima, with series composition handled by Jun Kumagai, characters designed by Nami Shōyama, and music composed by R.O.N and Shūhei Mutsuki. It is set to premiere in January 2027.[1]

Reception

By July 2026, the series had over 200,000 copies in circulation.[4]

See also

Notes

  1. ↑ Japanese: 欠けた月のメルセデス～吸血鬼の貴族に転生したけど捨てられそうなのでダンジョンを制覇する～, Hepburn: Kaketa Tsuki no Merusedesu: Kyūketsuki no Kizoku ni Tensei Shitakedo Suterare Sōnanode Danjon o Seiha Suru

References

  1. 1 2 Cayanan, Joanna (July 15, 2026). "Mercedes and the Waning Moon Anime Reveals TV Format, 1st Promo Video, Cast & Staff Members, January 2027 Debut". Anime News Network. Retrieved July 15, 2026.
  2. ↑ 欠けた月のメルセデス～吸血鬼の貴族に転生したけど捨てられそうなのでダンジョンを制覇する～ (in Japanese). Shōsetsuka ni Narō. Retrieved August 7, 2025.
  3. 1 2 欠けた月のメルセデス～吸血鬼の貴族に転生したけど捨てられそうなのでダンジョンを制覇する～ (in Japanese). TO Books. Retrieved August 7, 2025.
  4. 1 2 3 欠けた月のメルセデス5～吸血鬼の貴族に転生したけど捨てられそうなのでダンジョンを制覇する～ (in Japanese). TO Books. Retrieved May 10, 2026.
  5. ↑ Hodgkins, Crystalyn (November 16, 2024). "J-Novel Club Reveals 9 New Novel, 2 New Manga Licenses". Anime News Network. Retrieved August 7, 2025.
  6. 1 2 3 4 "Mercedes and the Waning Moon: The Dungeoneering Feats of a Discarded Vampire Aristocrat". J-Novel Club. Retrieved August 7, 2025.
  7. ↑ 欠けた月のメルセデス2～吸血鬼の貴族に転生したけど捨てられそうなのでダンジョンを制覇する～ (in Japanese). TO Books. Retrieved August 7, 2025.
  8. ↑ 欠けた月のメルセデス3～吸血鬼の貴族に転生したけど捨てられそうなのでダンジョンを制覇する～ (in Japanese). TO Books. Retrieved August 7, 2025.
  9. ↑ 欠けた月のメルセデス4～吸血鬼の貴族に転生したけど捨てられそうなのでダンジョンを制覇する～ (in Japanese). TO Books. Retrieved August 7, 2025.
  10. ↑ 転生吸血鬼少女の冒険ファンタジー「欠けた月のメルセデス」comicコロナ新連載. Comic Natalie (in Japanese). Natasha, Inc. August 23, 2021. Retrieved August 7, 2025.
  11. ↑ 『欠けた月のメルセデス ～吸血鬼の貴族に転生したけど捨てられそうなのでダンジョンを制覇する～』のコミカライズ連載が開始. LN-News.com (in Japanese). August 24, 2021. Retrieved August 7, 2025.
  12. ↑ この人生を全力で生きる！吸血鬼少女ファンタジー「欠けた月のメルセデス」1巻 (in Japanese). Natasha, Inc. December 15, 2021. Retrieved August 7, 2025.
  13. 1 2 欠けた月のメルセデス～吸血鬼の貴族に転生したけど捨てられそうなのでダンジョンを制覇する～@COMIC 第1巻【描き下ろし漫画特典付き】 (in Japanese). TO Books. Retrieved August 7, 2025.
  14. 1 2 欠けた月のメルセデス～吸血鬼の貴族に転生したけど捨てられそうなのでダンジョンを制覇する～@COMIC 第6巻 (in Japanese). TO Books. Retrieved May 10, 2026.
  15. 1 2 3 4 5 6 "Mercedes and the Waning Moon: The Dungeoneering Feats of a Discarded Vampire Aristocrat (Manga)". J-Novel Club. Retrieved August 7, 2025.
  16. ↑ 欠けた月のメルセデス～吸血鬼の貴族に転生したけど捨てられそうなのでダンジョンを制覇する～@COMIC 第2巻【描き下ろし漫画特典付き】 (in Japanese). TO Books. Retrieved August 7, 2025.
  17. ↑ 欠けた月のメルセデス～吸血鬼の貴族に転生したけど捨てられそうなのでダンジョンを制覇する～@COMIC 第3巻【描き下ろし漫画特典付き】 (in Japanese). TO Books. Retrieved August 7, 2025.
  18. ↑ 欠けた月のメルセデス～吸血鬼の貴族に転生したけど捨てられそうなのでダンジョンを制覇する～@COMIC 第4巻 (in Japanese). TO Books. Retrieved August 7, 2025.
  19. ↑ 欠けた月のメルセデス～吸血鬼の貴族に転生したけど捨てられそうなのでダンジョンを制覇する～@COMIC 第5巻 (in Japanese). TO Books. Retrieved August 7, 2025.
  20. ↑ Cayanan, Joanna (August 7, 2025). "Fire head's Mercedes and the Waning Moon Light Novel Series Gets Anime". Anime News Network. Retrieved August 7, 2025.
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