TV Asahi announced the production of a new Friday-night drama titled “名探偵のままでいて” during a press conference in Tokyo on July 17, 2026 [1].
The series brings a human-interest angle to the mystery genre by focusing on the relationship between a family and a grandfather living with dementia. By blending cognitive decline with detective work, the show aims to explore memory and legacy through a suspenseful lens.
The production is based on a novel by Masateru Konishi [1]. The story centers on a grandfather who continues to solve mysteries despite his health struggles. Eiji Okuda, 76, stars as the grandfather [3]. During the promotional event, Okuda said he has a personal fondness for grandchildren [5].
Ai Yoshikawa, 26, joins the cast alongside actors Takamatsu Aloha, and Tsunaki Ei [1, 3]. Yoshikawa said she has been enjoying the daily filming process. The cast appeared together at the TV Asahi studio to detail the project's direction and the dynamics between the characters [1].
The drama is scheduled to begin its broadcast on July 17, 2026 [2]. Viewers can tune in on Friday nights at 23:15 [2]. The timing places the show in a competitive late-night slot typically reserved for adult-oriented dramas or niche genre pieces.
Production details emphasize the emotional weight of the source material. The narrative focuses on the tension between the grandfather's fading memories and his enduring instinct for deduction. This contrast serves as the primary engine for the show's mystery elements [1].
“The series stars Ai Yoshikawa and Eiji Okuda in a story about a grandfather with dementia solving mysteries.”
The casting of a veteran actor like Eiji Okuda opposite younger stars like Ai Yoshikawa suggests TV Asahi is targeting a multi-generational audience. By adapting a story that centers on dementia, the network is leveraging a growing trend in Japanese media that combines procedural mystery with social commentary on aging and healthcare.
