- Title: My Grandfather, the Master Detective
- Type: Drama
- Format: Standard Series
- Country: Japan
- Episodes: 8
- Aired: Jul 17, 2026 - Sep 4, 2026
- Aired On: Friday
- Duration: 60 min.
- Genres: Mystery, Life, Drama
- Tags: Patient Supporting Character, Amateur Detective Supporting Character, Teacher Female Lead, Heartwarming, Grandpa-Granddaughter Relationship, Family Relationship, Healing, Dementia, Miniseries, Elderly Care
- Content Rating: Not Yet Rated
- Score: 7.7 (scored by 32 users)
- Ranked: #17834
- Popularity: #23200
- Watchers: 231
- Favorites: 0
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