Himika Akaneya has been officially cast in the ongoing TV anime series, Let This Grieving Soul Retire!, taking on the role of Ryuulan. Her character is slated to make her debut in the 18th episode of the series, titled “I Just Want a Relaxing Hot Spring Soak.”
Akaneya to Portray Ryuulan, Leader of the Underman
Akaneya will lend her voice to Ryuulan, the formidable leader of the subterranean people known as the “Underman.” This announcement comes as the fantasy series continues its run, with its second season having premiered in October 2025. Gree Entertainment revealed the new cast member on Friday, October 31, 2025.
About Let This Grieving Soul Retire!
Based on the popular light novel series written by Tsukikage and illustrated by Chyko, Let This Grieving Soul Retire! (Japanese title: Nageki no Bōrei wa Intai Shitai: Saijaku Hunter ni Yoru Saikyō Party Ikusei-jutsu) delves into a world of treasure hunters. The story follows Krai Andrey, the supposed leader of the elite “Grieving Souls” party, comprised of six childhood friends. Despite his reputation for possessing a wide array of skills, Krai secretly lacks any special talent and is, in fact, a self-proclaimed weakling. His achievements are largely a result of his overpowered friends. Krai’s constant desire is to retire from the dangerous life of a treasure hunter, fearing his incompetence will lead to his companions’ downfall. However, his friends and those around him mistakenly believe in his genius, forcing him to remain their reluctant leader.
The series began as a web novel in January 2018 before being officially published as a light novel by Micro Magazine. A manga adaptation by Rai Hebino also began serialization in April 2019.
Production and Broadcast Details
The anime adaptation is produced by Studio Zero-G and directed by Masahiro Takata. Hideki Shirane is handling the series composition, while Yūsuke Isouchi and Shingo Fujisaki are responsible for character design. Ryōhei Sataka composes the music.
The first season of Let This Grieving Soul Retire! originally aired from October to December 2024. The second season premiered on October 6, 2025, broadcasting on channels such as Tokyo MX and BS NTV in Japan. It also began streaming early on d Anime Store and ABEMA on October 4, 2025. Crunchyroll is streaming the series as it airs for international audiences.
Other notable cast members include Kensho Ono as the protagonist Krai Andrey and Miyu Kubota as Tino Shade. Kiyono Yasuno performs the second season’s opening theme song “Algorithm,” and i☆Ris performs the ending theme song “Yume no Hitokakera” (Fragment of a Dream).
