Kosaku Koizumi is known for Dream Stage (2026), Billion×School (2024) and Aosho! Voices in Bloom (2025).

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The Biggest Movies and TV Coming in September

"The Gentlemen" and "Slow Horses" return this fall, while the "Reacher" spin-off series "Neagley" makes its debut. See our guide of the biggest Fall TV and streaming releases.

2026 Fall TV and Streaming Watch Guide

&quot;The Gentlemen&quot; and &quot;Slow Horses&quot; return this fall, while the &quot;Reacher&quot; spin-off series &quot;Neagley&quot; makes its debut. See our guide of the biggest Fall TV and streaming releases.

Get a closer look at these actors from their many TV and streaming series roles.

Streaming Stars, Then and Now

Hiromi Yamakawa and RAN in Aosho! Voices in Bloom (2025)

Popular Serizawa Acts Weird Around Me (2026)

Kosaku Koizumi

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