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Biography

Yuta Koseki

Yuta Koseki (小関裕太) is a Japanese actor born on June 8, 1995, in Tokyo, Japan. Standing at 180 cm with blood type AB, he has built a prolific career spanning television dramas, feature films, and stage productions since his youth.

Yuta Koseki in a promotional or archival portrait from 1995
Yuta Koseki

Early Life and Career Background

Born and raised in Tokyo, Yuta Koseki entered the Japanese entertainment industry at an early age. His early work included appearances in projects such as Ten Nights of Dream (2007), where he played the young Soseki Natsume, and Vanished (2006). As he transitioned into adult and leading roles, his height and versatile acting range established him as a recognizable presence in Japanese media.

Film Career

Koseki's cinematic portfolio includes romantic comedies, dramatic features, and manga adaptations. Notable film appearances include:

  • Lovesick Ellie (2024) as Sumi Shiota
  • Liar x Liar (2021) as Shinji Karasuma
  • Mio's Cookbook (2020) as Gensai Nagata
  • Signal 100 (2020) as Sota Sakaki
  • Waiting For Spring (2018) as Aya Kamiyama
  • Missions of Love (2018) as Shigure Kitami
  • Anonymous Noise (2017) as Momo Sakaki

Television Work

In addition to his film roles, Koseki has maintained a steady presence in Japanese television dramas (dorama), appearing across major networks like NTV, TBS, Fuji TV, and TV Tokyo. His extensive television credits include:

  • Punch-Drunk Woman (NTV / 2026) as Hidehiko Ebihara
  • Inheritance Detective (NTV / 2025) as Masaomi Hyakumanben
  • A Calm Sea and Beautiful Days with You (Fuji TV / 2025) as Ryunosuke Fukami
  • I Wanna Punch that Scumbag (TBS / 2024) as Kanato Oba
  • The Neighbor Of Healing Has A Secret (NTV / 2023) as Soma Nishina
  • Raise de wa Chanto Shimasu (TV Tokyo / 2020) as Ken Matsuda
  • Bitter Blood (Fuji TV / 2014) as Kota Kagiyama
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