Kiyono Yasuno Electrifies Fans with 'Algorithm' Music Video, Kicking Off 'Let This Grieving Soul Retire!' Second Cour

The second cour of the fantasy adventure anime, Let This Grieving Soul Retire!, will feature a new opening theme titled "Algorithm." This song is performed by voice actress and singer Kiyono Yasuno. The official music video for "Algorithm" has been released, complementing the series' narrative.

This release marks Yasuno's fifth CD single. The physical edition is scheduled for release on November 19, 2025. This single arrives over four years after her previous one, highlighting its significance to her fanbase and the anime music industry.

Production Details

Let This Grieving Soul Retire! is based on the light novel series by Tsukikage, with illustrations by Chyko. Studio Zero-G is responsible for the anime adaptation. Masahiro Takata, known for directing The Iceblade Sorcerer Shall Rule the World, serves as the director. Hideki Shirane handles the series composition, while Yusuke Isouchi and Shingo Fujisaki are credited for character designs. The musical score for the anime is composed by Ryohei Sataka.

Narrative Overview

The story follows six childhood friends who become treasure hunters. The protagonist, Krai, experiences internal conflict, desiring to retire from this dangerous profession, even as his companions pursue their ambitions. This internal struggle adds emotional depth to the action.

Broadcast and Streaming

The second season premiered in October 2025, broadcasting on Japanese television networks including MBS and Tokyo MX. Crunchyroll provides exclusive international streaming for the series. Additionally, the idol voice actor unit i☆Ris performs the second cour's ending theme, "Yume no Hitokakera (Fragment of a Dream)."

The introduction of Yasuno's opening theme and its music video contributes to the series' creative momentum. This reinforces Let This Grieving Soul Retire!'s reputation for compelling storytelling and production quality, establishing it as a notable title for anime enthusiasts.