# Fuse (writer)
**Fuse** (ふせ) is the pen name of a Japanese light novelist and the creator of *That Time I Got Reincarnated as a Slime* (*Tensei Shitara Slime Datta Ken*), a franchise reported to rank among the commercially most successful isekai (Stories where someone is transported/reincarnated into another world) properties.[1](https://notablepeopleproject.org/fuse_writer) The author writes under a pseudonym, and no authoritative source establishes a real identity, birth date, or biography; the reading ふせ is documented, but the personal details behind it are not.[2](https://www.anisearch.com/person/39409,fuse) Beyond the main novels, Fuse is credited as original creator across the whole franchise: the manga and its spin-offs, the television anime, OVAs, and the films *Scarlet Bond* (2022) and *That Time I Got Reincarnated as a Slime the Movie: Tears of the Azure Sea*.[3](https://www.animenewsnetwork.com/encyclopedia/people.php?id=157944)
| Key fact | Detail |
|---|---|
| Pen name | Fuse (ふせ); real identity not publicly documented[2](https://www.anisearch.com/person/39409,fuse) |
| Debut | Serialized *That Time I Got Reincarnated as a Slime* on Shōsetsuka ni Narō from 2013; first print volume in 2014 under Micro Magazine's GC Novels imprint, illustrated by Mitz Vah[1](https://notablepeopleproject.org/fuse_writer) |
| Manga adaptation | Serialized in Kodansha's *Monthly Shōnen Sirius* from 2015, artwork by Taiki Kawakami[1](https://notablepeopleproject.org/fuse_writer) |
| Anime | Produced by Eight Bit: season 1 (2018), season 2 (2021), season 3 (2024, 24 episodes), season 4 announced for 2026 (24 episodes)[1](https://notablepeopleproject.org/fuse_writer) • [2](https://www.anisearch.com/person/39409,fuse) |
| Films | *Scarlet Bond* (2022), from an original story conceived by Fuse; *Tears of the Azure Sea*, with Fuse credited for original creator, original story, and supervision[1](https://notablepeopleproject.org/fuse_writer) • [3](https://www.animenewsnetwork.com/encyclopedia/people.php?id=157944) |
| English licensing | Light novels licensed by Yen Press in 2017[1](https://notablepeopleproject.org/fuse_writer) |
| Writing cycle | About six months per volume: roughly three months for the first draft, six weeks of editing and revisions, six weeks of rest and other work[4](https://mipon.org/that-time-i-got-reincarnated-as-a-slime-author-interview/) |
## Career
Fuse's route into print followed the standard web-novel path. The series began serialization in 2013 on [Shōsetsuka ni Narō](https://www.edgepedia.org/shosetsuka-ni-naro), a user-generated publishing website.[1](https://notablepeopleproject.org/fuse_writer) In an interview, Fuse described the transition to print: about a month before the results of a contest were to be announced, an editor from Micro Magazine Inc. contacted him, and that contact led to publication; he has kept the same editor since.[4](https://mipon.org/that-time-i-got-reincarnated-as-a-slime-author-interview/) The first light novel volume appeared in 2014 under Micro Magazine's GC Novels imprint, with illustrations by Mitz Vah.[1](https://notablepeopleproject.org/fuse_writer)
## Works
The main series is the light novel *That Time I Got Reincarnated as a Slime*, published by Micro Magazine under GC Novels with art by Mitz Vah.[1](https://notablepeopleproject.org/fuse_writer) The main series is reported to have concluded with its 23rd volume in 2025, closing the core story of Rimuru Tempest.[1](https://notablepeopleproject.org/fuse_writer)
**Manga adaptation.** The manga version began in Kodansha's *Monthly Shōnen Sirius* in 2015, with Taiki Kawakami handling the artwork.[1](https://notablepeopleproject.org/fuse_writer)
**Spin-offs.** Fuse is credited as original creator on a large family of spin-off manga and side stories, including:[3](https://www.animenewsnetwork.com/encyclopedia/people.php?id=157944) • [2](https://www.anisearch.com/person/39409,fuse)
- *That Time I Got Reincarnated as a Slime: Trinity in Tempest* (Kodansha, from 2019; listed as 12+/56+ volumes)[2](https://www.anisearch.com/person/39409,fuse)
- *Tensei Shitara Slime Datta Ken: Clayman Revenge* (Kodansha, from 2022; listed as 8+/42+ volumes)[2](https://www.anisearch.com/person/39409,fuse)
- *Tensei Shitara Slime Datta Ken: Bishoku-den* (Kodansha, from 2023)[3](https://www.animenewsnetwork.com/encyclopedia/people.php?id=157944) • [2](https://www.anisearch.com/person/39409,fuse)
- *The Slime Diaries*[3](https://www.animenewsnetwork.com/encyclopedia/people.php?id=157944)
- *The Ways of Monster Nation* and the *Workaholic Slime* manga[3](https://www.animenewsnetwork.com/encyclopedia/people.php?id=157944)
- *Toaru Kyūka no Sugoshikata*, a side-story light novel listed by aniSearch as volume 1 of 12 planned, published by Micro Magazine in 2025, with a manga adaptation from Kodansha in 2023[2](https://www.anisearch.com/person/39409,fuse)
- *Visions of Coleus*, a 2023 web ONA produced by 8bit[2](https://www.anisearch.com/person/39409,fuse)
## Writing process
Fuse described a fixed production rhythm in interview: a six-month cycle per volume, with about three months for the first draft, six weeks of editing and revisions, and six weeks of rest and miscellaneous work.[4](https://mipon.org/that-time-i-got-reincarnated-as-a-slime-author-interview/)
His involvement in adaptations is direct. For the anime, he supervised the entire script-writing process and confirmed various other details; for the manga adaptation, he oversaw nearly everything; and for spin-off stories, he wrote the plots and answered staff questions.[4](https://mipon.org/that-time-i-got-reincarnated-as-a-slime-author-interview/) This supervision role is reflected in his screen credits, where he is listed not only as original creator but, for *Tears of the Azure Sea*, also for original story and supervision.[3](https://www.animenewsnetwork.com/encyclopedia/people.php?id=157944)
## Adaptations and franchise
The television anime, produced by the studio Eight Bit, premiered in 2018, with a second season in 2021 and a third season in 2024.[1](https://notablepeopleproject.org/fuse_writer) aniSearch lists season 3 as a 24-episode series (2024) and season 4 as a 24-episode series scheduled for 2026, both by 8bit Corp, with Fuse credited for original work.[2](https://www.anisearch.com/person/39409,fuse) [Anime News Network](https://www.edgepedia.org/anime-news-network)'s credits extend Fuse's original-creator credit through a sixth television season.[3](https://www.animenewsnetwork.com/encyclopedia/people.php?id=157944)
Two theatrical films carry Fuse's involvement. *The Movie: That Time I Got Reincarnated as a Slime: Scarlet Bond* premiered in 2022 from an original story conceived by Fuse.[1](https://notablepeopleproject.org/fuse_writer) *That Time I Got Reincarnated as a Slime the Movie: Tears of the Azure Sea* credits him as original creator (light novel), original story, and supervision.[3](https://www.animenewsnetwork.com/encyclopedia/people.php?id=157944)
In English, Yen Press licensed the light novels for publication in 2017.[1](https://notablepeopleproject.org/fuse_writer)
## By the numbers
The franchise's commercial scale is reported in general terms rather than audited figures: tens of millions of light novel and manga copies in circulation, a level that places it among the commercially most successful isekai properties.[1](https://notablepeopleproject.org/fuse_writer)
Dated counts are firmer. The manga spin-offs alone account for dozens of volumes: Trinity in Tempest at 12 or more of a planned 56+, Clayman Revenge at 8 or more of a planned 42+, and Bishoku-den beginning in 2023.[2](https://www.anisearch.com/person/39409,fuse) Season 3 of the anime ran as a 24-episode series in 2024, with a fourth 24-episode season that was scheduled for 2026.[2](https://www.anisearch.com/person/39409,fuse)
## What has changed since 2023
Four developments mark the period after late 2023. Season 3 of the anime aired in 2024 as a 24-episode series, and season 4 had been scheduled for 2026.[2](https://www.anisearch.com/person/39409,fuse) A new side-story light novel, *Tensei Shitara Slime datta Ken Bangai-hen: Toaru Kyuuka no Sugoshikata*, began publication with Micro Magazine in 2025 as volume 1 of 12 planned.[2](https://www.anisearch.com/person/39409,fuse) The film *Tears of the Azure Sea* entered production with Fuse credited for original story and supervision.[3](https://www.animenewsnetwork.com/encyclopedia/people.php?id=157944) And, according to one account, the main light novel series reached its conclusion with volume 23 in 2025.[1](https://notablepeopleproject.org/fuse_writer)
## References
1. [Fuse (writer), Notable People](https://notablepeopleproject.org/fuse_writer)
2. [Fuse, aniSearch](https://www.anisearch.com/person/39409,fuse)
3. [Fuse, Anime News Network Encyclopedia](https://www.animenewsnetwork.com/encyclopedia/people.php?id=157944)
4. [Interview with That Time I Got Reincarnated as a Slime's AUTHOR, Mipon](https://mipon.org/that-time-i-got-reincarnated-as-a-slime-author-interview/)
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*Topic: Encyclopedia › Arts and culture › Literature and written works › Writers and literary biographies › Fiction writers: novelists and genre › Romance and popular fiction writers*
*Initially written Sep 17, 2026 · Reviewed: Oct 25, 2026 · Edited: Oct 11, 2026; Oct 15, 2026; Oct 25, 2026 · Last review: Oct 25, 2026*
*Copyright 2026 EdgeChat AI, a subsidiary of Biostate AI.*
License: Edgepedia Community License 1.0, https://www.edgepedia.org/edgepedia/license