Dungeon Master: Creating a Hot Spring Dungeon

Dungeon Master: Creating a Hot Spring Dungeon
First light novel volume cover
異世界転生ダンジョンマスター 温泉ダンジョンを作る
(Isekai Tensei Danjon Masutā: Onsen Danjon o Tsukuru)
GenreFantasy, isekai
Novel series
Written byAmahara
Published byShōsetsuka ni Narō
Original runOctober 30, 2024 – present
Light novel
Written byAmahara
Illustrated byJun
Published byFujimi Shobo
English publisher
ImprintFujimi Fantasia Bunko
Original runAugust 20, 2025 – present
Volumes4
Manga
Written byAmahara
Illustrated byAldehyde
Published byFujimi Shobo
ImprintDragon Comics Age
MagazineDraDra Sharp
Original runApril 10, 2026 – present
Volumes1

Dungeon Master: Creating a Hot Spring Dungeon (異世界転生ダンジョンマスター 温泉ダンジョンを作る, Isekai Tensei Danjon Masutā: Onsen Danjon o Tsukuru) is a Japanese light novel series written by Amahara and illustrated by Jun. It initially began serialization as a web novel published on Shōsetsuka ni Narō in October 2024. It later began publication under Fujimi Shobo's Fujimi Fantasia Bunko light novel imprint in August 2025. A manga adaptation illustrated by Aldehyde began serialization on Kadokawa's KadoComi and Nico Nico Seiga websites under Fujimi Shobo's DraDra Sharp brand in April 2026.

Synopsis

As the protagonist lies down awaiting his eventual death from an incurable disease, he receives an encounter from supernatural entity named Peta-chan offering him a second chance at life in another world. However, it comes with a caveat where he is in charge of operating a dungeon owned by Peta. The protagonist known only as "Master" / "Sen" decides to operate the dungeon as a hot springs with a clearer focus on healing and strengthening clients. As the dungeon grows in popularity, unexpected phenomena begin to arise.

Characters

Peta-chan (ペタちゃん)
Voiced by: Miyu Tomita (PV)

Media

Light novel

Written by Amahara, Dungeon Master: Creating a Hot Spring Dungeon began serialization on Shōsetsuka ni Narō on October 30, 2024. It later began publication with illustrations by Jun under Fujimi Shobo's Fujimi Fantasia Bunko light novel imprint on August 20, 2025. Four volumes have been released as of October 20, 2026.

During its panel at New York Comic-Con 2026, Yen Press announced that it had licensed the series for English publication.

No. Original release date Original ISBN North American release date North American ISBN
1August 20, 2025978-4-04-075934-0April 13, 2027979-8-85-544375-2
2December 19, 2025978-4-04-075935-7——
3May 20, 2026978-4-04-076329-3——
4October 20, 2026978-4-04-076553-2——

Manga

A manga adaptation illustrated by Aldehyde began serialization on Kadokawa's KadoComi and Nico Nico Seiga websites under Fujimi Shobo's DraDra Sharp brand on April 10, 2026. The manga's chapters have been compiled into a single tankōbon volume as of October 2026.

No. Release date ISBN
1October 9, 2026978-4-04-076592-1

Other

A promotional video was simultaneously uploaded to the Kadokawa Anime YouTube channel on the day of the first light novel volume's release. The video contained voiceover from Miyu Tomita.

Reception

The series won the 2025 Next Light Novel Award in the bunkōbon category.

See also

References

  1. 1 2 3 『異世界転生ダンジョンマスター 温泉ダンジョンを作る』声優・富田美憂さん出演のスペシャルPVが公開中 各地の銭湯にてショートPVの配信&試し読み冊子の配布も. LN-News.com (in Japanese). August 20, 2025. Retrieved November 10, 2026.
  2. ↑ 異世界転生ダンジョンマスター 温泉ダンジョンを作る (in Japanese). Shōsetsuka ni Narō. Retrieved November 10, 2026.
  3. 1 2 異世界転生ダンジョンマスター 温泉ダンジョンを作る4 (in Japanese). Fujimi Shobo. Retrieved November 10, 2026.
  4. ↑ Mateo, Alex (October 9, 2026). "Yen Press Licenses Fate/strange Fake, Kino's Journey, Spice and Wolf Diner: Gourmet Exploration, More Manga/Novels". Anime News Network. Retrieved November 10, 2026.
  5. ↑ 異世界転生ダンジョンマスター 温泉ダンジョンを作る (in Japanese). Fujimi Shobo. Retrieved November 10, 2026.
  6. ↑ "Dungeon Master: Creating a Hot Spring Dungeon, Vol. 1". Yen Press. Retrieved November 10, 2026.
  7. ↑ 異世界転生ダンジョンマスター 温泉ダンジョンを作る2 (in Japanese). Fujimi Shobo. Retrieved November 10, 2026.
  8. ↑ 異世界転生ダンジョンマスター 温泉ダンジョンを作る3 (in Japanese). Fujimi Shobo. Retrieved November 10, 2026.
  9. ↑ 『異世界転生ダンジョンマスター 温泉ダンジョンを作る』のコミカライズ連載が開始. LN-News.com (in Japanese). April 18, 2026. Retrieved November 10, 2026.
  10. 1 2 異世界転生ダンジョンマスター 温泉ダンジョンを作る1 (in Japanese). Fujimi Shobo. Retrieved November 10, 2026.
  11. ↑ 次にくるライトノベル大賞2025:文庫部門は『異世界転生ダンジョンマスター 温泉ダンジョンを作る』、単行本部門は『異世界転生勧誘詐欺』が1位に選出. LN-News.com (in Japanese). February 25, 2026. Retrieved November 10, 2026.