Fans of That Time I Got Reincarnated as a Slime (Tensura) received a double announcement: Season 4 Cour 3 is confirmed to air in July 2027, and the official spin-off Tensei Shitara Slime Datta Ken: Clayman REVENGE will receive a TV anime adaptation premiering in April 2027.
Both announcements were made through a special collaboration video revealed immediately after the Season 4 Cour 2 finale, which aired on September 25. Produced by studio Eight Bit, the video features Clayman suddenly appearing before Rimuru and the Wisdom King, showcasing a comedic exchange between the two characters that was absent from the Season 2 anime.
About Clayman REVENGE
Clayman REVENGE is an official Tensura spin-off manga serialized in Kodansha’s Monthly Shonen Sirius, drawn by Kajika Ko based on the original story by Fuse. The series stars Clayman — the Demon Lord and Marionette Master who rules the puppet nation of Jistarve, and whose ambitions were crushed by Rimuru in the main story — as he time-leaps 70 years into the past, exploring a “story that might have been.” A teaser visual for the anime was also released alongside the announcement.
Staff & Cast
The anime is produced by Eight Bit, the same studio behind the main Tensura series, with the following staff:
- Original Work: Kajika Ko, Fuse, Mitsuba (Clayman REVENGE / Kodansha, Monthly Shonen Sirius)
- Director: Kentaro Sugimoto
- Series Composition: Yuji Ikuhara
- Character Design: Asumi Hashimoto, Hideki Sakai
- Animation Production: Eight Bit
Takehito Koyasu reprises his role as Clayman, consistent with his performance in the main Tensura anime.
Comments from Creators
Fuse (original author): “Clayman REVENGE started as a sudden whim, and now it’s getting an anime — even I’m nervous as the one who pitched it (laughs). The concept was simple: Clayman with a serious face scolding his subordinates, while the wine glass in his hand trembles and spills a small stain on his pristine white suit, and he desperately tries to hide his embarrassment. That alone is funny. I originally planned just two volumes, but thanks to the fans’ warm reception, I want to keep going as long as I can. I hope everyone on the team — creators and animation staff alike — enjoys making this together.”
Kajika Ko (manga artist): “Just being able to draw a Tensura spin-off was already a miracle to me, so when I heard it was getting an anime, it didn’t feel real for a while. Seeing the character designs and visiting the recording studio has been incredibly moving. I’m so excited to see Clayman’s army animated!”
Setting Materials Books
Additionally, the second and third volumes of the Anime That Time I Got Reincarnated as a Slime Setting Materials Collection have been announced, with pre-orders now open at the Bandai Namco Filmworks official online store, A-on STORE. Volume 2 covers Season 2 along with the OAD and “Coleus no Yume,” while Volume 3 covers Season 3 and the theatrical film Scarlet Bond, including character design sheets and background art.

