The claim
小泉進次郎氏の祖父は横須賀のヤクザで在日朝鮮人?
Original review summary
The review found that the tattooed man shown in the circulated image was unrelated to the Koizumi family and that the image and biography did not belong to a Koizumi. It also clarifies that Mat次郎 Koizumi was Shinjiro’s great-grandfather, not his grandfather.[S1]
Additional context
The review identifies the man in the image as a tattoo artist known as Horichiyo; it says the image is held by Nagasaki University’s historical photograph database. [S1]
Research date:
Sources and attribution
- [S1] 日本ファクトチェックセンター(JFC) original review
Original review · Retrieved October 16, 2026
Original review: 日本ファクトチェックセンター(JFC). Structured data compiled by Data Commons under CC BY 4.0. Publisher article content is subject to its own terms. Summaries and context are produced by PeakMetrics with AI assistance.
Updated