The Detective Is Already Dead returns for a second season in October 2026, and studio ENGI just dropped a second promo video along with the theme-song lineup. The opening is Kōme’s "Kono Shinzō ni Hanabata wo," and the ending is Kagura Nana’s "Hakuchumu."
Quick answer
The Detective Is Already Dead Season 2 (*Tantei wa Mou, Shindeiru.*) premieres October 2026, animated by ENGI under director Manabu Kurihara. Returning cast includes Arata Nagai as Kimihiko Kimizuka and Saki Miyashita as Siesta. The opening theme is by Kōme; the ending by Kagura Nana. The series adapts Nigojū’s light novels. SenpaiRanks tracks Season 2 on its board now.
The new promo
Here’s the second promotional video:
Who's returning
Arata Nagai (Kimizuka), Saki Miyashita (Siesta), Ayana Taketatsu (Nagisa Natsunagi), Kanon Takao (Yui Saikawa), and Saho Shirasu (Charlotte) all return. Director Manabu Kurihara leads, with series scripts by Deko Akao, character designs by Yōsuke Itō, and music by 40mP, adapting Nigojū’s light novels (illustrated by Umibōzu).
Worth a slot?
If you watched the 2021 first season, this is the continuation you’ve been waiting on. It sits in the mid-tier of SenpaiRanks’s board — a comfortable watch for mystery-flavored light-novel fans rather than a top-of-season priority. Season 2’s ranking is live, so you can weigh in once it airs. For the broader lineup, see our what to watch fall 2026 roundup.
Frequently asked questions
Q: When does The Detective Is Already Dead Season 2 premiere?
A: October 2026, animated by studio ENGI.
Q: Who sings the Season 2 theme songs?
A: Kōme performs the opening, "Kono Shinzō ni Hanabata wo," and Kagura Nana performs the ending, "Hakuchumu."
Q: Is the original cast returning?
A: Yes — Arata Nagai, Saki Miyashita, Ayana Taketatsu, Kanon Takao, and Saho Shirasu all reprise their roles.