A Tale of the Secret Saint revealed the first anime teaser visual at the ongoing AnimeJapan 2025 event. The adaptation was recently announced, and details regarding the studio or staff have not yet been revealed.

The main voice cast for the anime includes:

• Shion Wakayama as the son of AS
• Shinnosuke Tokudome As zavilia
• Yuichiro Umehara as Saviz
• Nobunaga Shimazaki as Cyril

You can see the new visual below.

Also check out our full AnimeJapan 2025 Announcements coverage

A Tale of the Secret Saint (The Tensei Shita Daiseijo wa, Seijo de Aru Koto o Hitakakusu) is a Japanese light novel series written by Toya with illustrations by chibi. The series was first serialized on the website Shosetsuka ni Naro in January 2019. Later that year, Earth Star Entertainment acquired the rights and began publishing it under their Earth Star Entertainment light novel imprint in June 2019.

A manga adaptation, illustrated by Mahito Aobe, started serialization on the Comic Earth Star website in December 2019. Additionally, the series also has a spin-off prequel light novel series by the original creators, which itself has a manga adaptation by Shiina. Both the light novel and manga have been licensed in English by Seven Seas Entertainment, which describes the story:
Born into a long line of knights, Fia is determined to become a knight herself, just like all her siblings. But a brush with death awakens memories of her past life as a Saint–a woman who wields rare, powerful healing and protection magic–along with the ability to use that magic herself! The downside is that Fia also remembers her past life’s untimely death, and the danger she will be in if anyone finds out what she really is. She vows to stay on her knighthood path and keep her powers a secret forever! But how can she resist using her newfound powers when they’re just so useful?

Source: A Tale of the Secret Saint Official WebsiteAnimejapan 2025
© Toya / Earth Star Entertainment / Black Dragon Knights