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Kōsuke Ishii

石井講祐 / いしい こうすけ

Japanese professional basketball player from Chiba

September 29, 1987 (age 38) ・ Chiba Prefecture, Japan

  • From Chiba Prefecture
  • Basketball player

My Take

Kosuke Ishii is the kind of name that doesn't ring a bell unless you actually follow Japanese basketball — which, honestly, is a pretty solid filter for who the real fans are. Born in 1987 in Chiba and went all the way through Tokai University on the strength of hoops alone, which tells you this wasn't a hobby or a backup plan. Basketball is a five-person sport where the quiet, reliable guy often does more work than the highlight reel ever shows, and everything about what little I know of Ishii puts him squarely in that category — the player who makes the right pass, sets the screen nobody notices, and just keeps showing up. I don't have a thick file on his career stats or team history, and I'll be straight about that, but there's something genuinely respectable about someone who grinds through a sport that demands that much from you for that long. Libra born in the year of the Rabbit — steady, balanced, easy to underestimate. Sounds about right.

Overview

Kōsuke Ishii is a Japanese professional basketball player born on September 29, 1987, in Chiba Prefecture. He attended Tokai University, where he developed his basketball career. He is active on Instagram under the handle ishiikosuke. Further details on his agency, career timeline, and personal life are not publicly available.

1. Profile

Name (English)
Kōsuke Ishii
Name (Japanese)
石井講祐
Reading
いしい こうすけ
Born
September 29, 1987 (age 38)
Zodiac / Chinese zodiac
Libra / Rabbit (卯)
Origin
Chiba Prefecture, Japan
Blood type
Private
Height
Private
Agency
Private
Active years
Unknown
Occupation
Basketball player

2. Background

Elementary school
Private
Junior high
Private
High school
Private
University
Tokai University
Debut
Unknown

3. Relationships

Spouse
Private
Children
Private
Parents
Private
Siblings
Private

4. Personality

Motto

Private

7. About this entry

Tags

  • From Chiba Prefecture
  • Basketball player
Last updated
2026-06-02

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