Keiichi Koshimizu

Keiichi Koshimizu is one of those quietly persistent political figures who doesn't make the front page every week but keeps showing up because that's just what he does. Born in 1962 in Hokuto, Yamanashi — real rural Japan — and educated at Aoyama Gakuin University, he has that mix of small-town roots and city polish that tends to produce durable politicians rather than flashy ones. I genuinely don't know every policy he's championed, and I won't pretend otherwise, but the guy has been at this long enough that at 60-plus he's hitting what I'd call peak seasoning — the age where a regional politician either fades out or becomes the kind of steady hand that holds a constituency together without anyone fully noticing. That quiet durability is underrated. Yamanashi isn't the center of the political universe, but somebody has to do the work there, and Koshimizu seems to be that somebody.

Keiichi Koshimizu is a Japanese politician born on February 4, 1962, in Hokuto, Yamanashi Prefecture. He studied at Aoyama Gakuin University. He has maintained a public presence through his official website and an account on X (formerly Twitter).

Name (English)

Keiichi Koshimizu

Name (Japanese)

輿水恵一

Reading

こしみず けいいち

Born

February 4, 1962 (age 64)

Zodiac / Chinese zodiac

Aquarius / Tiger (Tora)

Origin

Hokuto, Yamanashi Prefecture, Japan

Occupation

Politician

University

Aoyama Gakuin University

Motto

Private

• Official sitehttp://www.k-koshimizu.jp/
• Xhttps://x.com/koshimizu_k1
• Wikipedia (Japanese)https://ja.wikipedia.org/wiki/%E8%BC%BF%E6%B0%B4%E6%81%B5%E4%B8%80

Tags

• From Yamanashi Prefecture
• Politician

Last updated

2026-06-02

Facts are limited to publicly available information up to 2024; non-public or unconfirmed items are omitted. English text is machine-assisted (facts translated by Sonnet, "My Take" written by Opus 4.8). The Japanese page is the source of record.