How old was Kosaku Koizumi in…

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Sorted by Release Date
Ages in TV shows are based off the first air date and may not be accurate. View individual episode details for accurate ages

Kosaku Koizumi was 21+ in Billion x School as 'Tamaru Hajime'.

TV Show Released: First Air Date
Fri, Jul 05 2024

Kosaku Koizumi was 20+ in Boys with Secrets as 'Shiina Takayuki'.

TV Show Released: First Air Date
Fri, Oct 06 2023

Kosaku Koizumi was 20+ in 沼オトコと沼落ちオンナのmidnight call～寝不足の原因は自分にある。 as 'Yakumo Yuuta'.

TV Show Released: First Air Date
Wed, Aug 30 2023

Kosaku Koizumi was 18+ in My Dear Exes

TV Show Released: First Air Date
Tue, Apr 13 2021