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 began serialization on TO Books's Comic Corona website in August 2021, and has been compiled into six 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

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. It was later acquired for publication by TO Books, which began publishing it as a light novel on May 10, 2021. Five volumes have released as of July 2026. The series is licensed in English by J-Novel Club.

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

Anime An anime adaptation was announced on August 7, 2025. 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 , characters designed by Nami Shōyama, and music composed by R.O.N and . The series is set to premiere in January 2027.

Reception By July 2026, the series had over 200,000 copies in circulation.

See also Skeleton Knight in Another World, another light novel series with the same illustrator A Wild Last Boss Appeared!, another light novel series with the same writer The Wrong Way to Use Healing Magic, another light novel series with the same illustrator

Notes

References

External links at Shōsetsuka ni Narō