That Time I Got Reincarnated as a Slime Novel Concludes with Volume 23 and Special Edition Release

The popular light novel series That Time I Got Reincarnated as a Slime (commonly known as TenSura), which has surpassed 56 million copies in circulation, will finally reach its conclusion. Micro Magazine has opened pre-orders for the final volume, That Time I Got Reincarnated as a Slime 23, and the side story That Time I Got Reincarnated as a Slime Side Story: How to Spend a Certain Vacation (JP: とある休日の過ごし方, Toaru Kyujitsu no Sugoshikata), both set to be released under the GC Novels label on November 29, 2025.

Written by Fuse and adapted into a manga by Taiki Kawakami (published by Kodansha), the series has expanded into television anime, stage productions, and more. The story of Rimuru, the protagonist who reincarnates as a slime and embarks on a journey of growth and adventure, has captivated readers for over 10 years.

The 23rd and final volume will also be available in a deluxe special edition. This edition includes an acrylic panel featuring Rimuru alongside the top 11 characters chosen in the popularity poll conducted in February 2025, newly illustrated by artist Mitz Vah. Additionally, a set of postcards featuring each character is included. The postcards are printed on traditional Japanese washi paper and showcase exclusive outfits that match the new illustrations, making them highly collectible items for fans.

The acrylic panel also comes with reproduced autographs and messages from author Fuse and illustrator Mitz Vah, serving as a commemorative gift befitting the series finale. Further related projects and events are planned to thank long-time supporters of the series.

Side Stor Receives a Long-Awaited Book Release

Originally published online as a newly written side story commemorating the 10th anniversary of That Time I Got Reincarnated as a Slime, How to Spend a Certain Vacation (tentative title, JP: とある休日の過ごし方) is finally being released in book form, complete with revisions and special features.

The manga adaptation of That Time I Got Reincarnated as a Slime Side Story: How to Spend a Certain Vacation, illustrated by legendary 3×3 EYES creator Yuzo Takada and serialized in Monthly Shonen Sirius from September 2023 to July 2025, has now concluded. The novel version, published under GC Novels, will include a special dialogue between Takada and Fuse as well as a brand-new story set after the main series finale. It will be released on the same day as Volume 23.

■introduction
The very first side story of TenSura finally comes to print!

Rimuru × Hinata × Veldora travel to the “Sanctuary of Magic”

After the successful conclusion of the Opening Festival, peace once again returns to the Jura Tempest Federation.

It is during this calm period that Veldora suddenly announces his desire to develop “Beast Magic.” This system of magic, first introduced in the classic manga 3×3 EYES as the creation of the great sorcerer Benares, represents the ultimate magical romance for men.

Though Rimuru is doubtful about its feasibility in this world, the support of Luminous convinces him to journey to the “Magic Tower” to attempt the development of new spells.

Thus begins a magical research trip (an “extended vacation” of sorts) undertaken by Rimuru, Veldora, and Hinata.

The novel will also feature a special dialogue between Yuzo Takada, who illustrated the manga version, and original author Fuse, along with an exclusive short story written after the series conclusion.

Source : PR TIMES