The Regression of Great Sage Riddle: Story, Cast and Series Facts

Story and premise

A young man named Riddle had lost all of his friends—and the entire world—at the hands of a mysterious organization known as the "Box of Malice." Having lost all hope to live, he dwelled in a pit of despair until he has one final revelation. What if... he could return to a time before everything ended? And so, after a thousand years, a deformed Riddle finally manages to reverse time. "I'm going to stop them this time...!" Equipped with a thousand years of knowledge and experience in his young body, the Great Sage Riddle's journey to the past now unfolds!

Series details

• Title: The Regression of Great Sage Riddle
• Format: Animation
• Language: Japanese
• Genres: Action, Anime, Fantasy
• Premiere date: 2026-04-01
• Status in TVmaze: To Be Determined
• Network listed by TVmaze: TV Kanagawa
• Web channel listed by TVmaze: DMM TV
• Network country: Japan
• Typical episode runtime: 5 minutes
• TVMaze ID: 90628
• TVDB ID: 473668

Cast and credited roles

• Junya Enoki — Riddle (after going back in time)
• Azusa Tadokoro — Norn
• Akio Ohtsuka — Riddle (before going back in time)
• Tasuku Hatanaka — Darthan

Seasons in the TVmaze catalogue

• Season 1: premiered 2026-04-01; final listed air date 2026-06-17; episode order: 12.

Source and licence

Adapted from The Regression of Great Sage Riddle on TVmaze. The synopsis is reproduced as plain text; catalogue facts, cast and season records are selected and reformatted. This adapted text is available under CC BY-SA 4.0, following the TVmaze API licence. Network and web-channel credits identify the service listed in this source; they do not establish current streaming availability.