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Yuta Koseki

Yuta Koseki

Acting

Biography

Koseki Yuta, alternatively written as 'Koseki Yuuta', is a Japanese actor. He's been active in the entertainment business since 2003 and has starred in commercials for products such as "Phantasy Star Portable 2" and plays such as "Musical Shugo Chara!". He is mainly known for his part in the "Prince of Tennis Musicals" (Second Generation) as he played Kikumaru Eiji. He also appeared in the Shugo Chara Musical, in La Corda de Oro Musical and played the main character in the rerun of the Amuse stage play, FROGS. He appeared in some movies and dramas such as "Ooku", "Bitter Blood", and "Oyaji no Senaka"

Known For

Document 72 Hours
8.7

An unusual documentary series that delves into human dramas through chance encounters with ordinary people at selected spots. Filmed over 72 hours in a single location, the show captures glimpses into people's lives as they open up and share their stories.

Document 72 Hours

2006
Back of Father
8.0

A 10-part omnibus drama by 10 different scriptwriters on the theme of fathers and their sons and daughters.

Back of Father

2014
Breakers
3.5

Centers on para-athletes who all meet an outcast sports scientist named Ren Narita. The anime will have four stories about four different sports: wheelchair basketball, track and high jump, goalball, and paralympic swimming.

Breakers

2020
ISHIKO and HANEO: You're Suing Me?
7.5

A paralegal who graduated from a big-name school teams up with an offbeat lawyer, taking on oddball little cases out of a small, neighborhood law office.

ISHIKO and HANEO: You're Suing Me?

2022
I'll Do Better Next Life
6.7

Omori Momoe is twenty-seven-years-old, single and works at Studio Delta. She is thin and attractive. She should be courting suitors and taking her pick of the crop. Well, actually she does. She is having sex despite being single. In fact, she is making herself available sexually to five different men. to her it is just a disposable and habitual object of pleasure. She is sensual, sexy and adds the pleasure of sex toys to her repertoire of pleasures.

I'll Do Better Next Life

2020
Saving My Stupid Youth
7.7

Heisuke teaches at his alma mater, an all-boy’s Buddhist high school and leads a very ordinary life, except for the fact that he is still tortured by the memory of an unfortunate incident that took place there involving him and his school 14 years ago. In hopes of closure, he strikes upon a plan to jointly hold this year’s Culture Festival with a nearby girl’s school, with which there are chilly relations. Determined at all costs to make the event a success, Heisuke finds himself dealing with a constant stream of problems along the way.

Saving My Stupid Youth

2014
Police in a Pod
8.1

20-year-old rookie police officer Kawai Mai works hard at a police box and feels both physically and mentally drained. She has never felt appreciated even though she supposedly works for the sake of the area’s residents. In addition, she does not find working at a police box rewarding. Mai is about to hand in her resignation when she meets 30-year-old Fuji Seiko, the former ace detective of the Criminal Investigations Division. Seiko is said to have been forced to transfer to the police box for harassing a subordinate at work but … … This encounter between Mai and Seiko will significantly change their lives as they are suddenly paired up. This odd pair struggle to help and support each other in cases, routine duties and romance?! And Seiko’s true reason for coming to the police box is revealed.

Police in a Pod

2021
The Expert of Changing Jobs
7.7

Hitsujitani Chiharu joined a big advertising agency after she graduated from a university. She experienced a hard time at her job due to harassment. After 3 years, Hitsujitani Chiharu decided to quit working at the advertising agency. She begins to work for a temp agency that is run by her aunt. There, she meets Kurusu Arashi, who works as a career adviser at the temp agency. He walks with a cane due to discomfort from his left foot, but he has a great reputation as a career adviser and his nickname is The Devil of Changing Jobs. He often makes biting remarks to people worried about changing jobs. Working with Kurusu Arashi and dealing with people who are looking to change jobs, Hitsujitani Chiharu also grows as a person.

The Expert of Changing Jobs

2023
The Could've-Gone-All-the-Way Committee
5.9

People bring their stories of missed lust connections to an objective panel of experts who then judge whether they could have gone all the way or not.

The Could've-Gone-All-the-Way Committee

2018
A Calm Sea and Beautiful Days with You
8.4

During the Showa-era, newlyweds Natsumi Ebata and Takimasa Ebata enter an arranged marriage without a single day of courtship. Through tender yet exasperating moments, the two slowly bridge the gap between them, discovering love in the quiet routines of their shared days.

A Calm Sea and Beautiful Days with You

2025
ZERO -The Bravest Money Game-
7.8

The winner of a secret survival game stands to win a large sum of money. However, one player does not seem to be in the game for the money.

ZERO -The Bravest Money Game-

2018
The Neighbor of Healing Has a Secret
7.0

Yomogida Fujiko is an office worker with an academic complex. She works hard and becomes a full-time employee at an insurance company, but because of her diligence, she is unable to refuse the work she is asked to do and accepts it with a smile on her face. One day, an elite company employee, Nishina Soma, moves into the room next door. Fujiko is soothed by the time she spends with her very kind and gentlemanly neighbor. But why did Nishina, a supposedly elite man, move into this shabby apartment, and why is he so kind to Fujiko...? It seems that Nishina, who does not speak much, is a stranger to Fujiko...?

The Neighbor of Healing Has a Secret

2023
Love is Hard for a Rich Man
6.0

Privileged heir Subaru Tendo is forced to work as a new hire and live in a dormitory at his family's apparel company to learn humility. There, he meets Madoka, a thrifty and outspoken coworker who challenges his ego.

Love is Hard for a Rich Man

2025
I Wanna Punch That Scumbag!
6.0

Hokomi Sato has hit rock bottom after being left at the altar on her wedding day. However, things start looking up when she meets the kind and compassionate Kairi Kuzuya. But in fact, he turns out to be the “worst womanizing scum of the earth!” Vowing never to be hurt again, Hokomi decides to change herself and takes up boxing, setting her life on a new course. Yet, she can’t seem to keep Kairi out of her life as she begins to learn of his eventful past. Follow Hokomi on her journey to mental and physical empowerment through this no-holds-barred boxing love story!

I Wanna Punch That Scumbag!

2024
I Want to Die Alone
9.3

Narumi Yamaguchi, a single woman who enjoyed her independent life, suddenly started dating after her admired aunt died alone. After failing to find a partner and being bluntly told by her younger colleague Yuya Nasuda that "marriage security is outdated thinking", she shifted focus from marriage hunting to end-of-life planning.

I Want to Die Alone

2025
I Was a "Secret Bitch"
4.7

Hiromi is a 26-year-old single woman. She is popular with guys. Her hobby and specialty is getting men to like her using small talk and a shy persona. If a guy confesses his feelings for her, Hiromi leaves them. Hiromi's sharehouse mate Akira and her friend Aya blame Hiromi, calling her "Kakure Bitch" (a type of women who uses innocence to flirt with men). Hiromi does not care. One day, she takes an interest in Tsuyoshi, who works in the same office. She becomes to like him sincerely.

I Was a "Secret Bitch"

2019
The New King
N/A

Koshiro runs a temp agency experiencing financial distress. Koshiro dreams of becoming a successful businessman. Akiba who was once a successful businessman, is now working on developing apps in Koshiro’s office. Isao runs a successful investment company and dominates people with his wealth. Akiba and Isao team up to buy a Tokyo broadcasting station.

The New King

2019
It's a Wonderful Teacher!
N/A

Rio Sasaoka, a high school teacher struggling with the pressures of her job, finds solace in a secret social media account and the support of her caring boyfriend. When she's unexpectedly assigned as a homeroom teacher to a third-year class, Rio faces new challenges that test her resilience and rekindle her passion for teaching.

It's a Wonderful Teacher!

2024
Tokyo Alice
7.6

Four former classmates share an apartment in Daikanyama, Tokyo and pursue their own happiness. Arisugawa Fuu works for a design production company and spends most of her salary on fashion, Hada Mizuhois a budding manga artist, Sakuragawa Rio practices psychosomatic medicine, and Enjoji Sayuri works for a Ginza art gallery.

Tokyo Alice

2017
Ojisama to Neko
8.8

Kanda Fuyuki is a world-famous pianist who has been keeping his life busy after his wife's death. One day, Fuyuki meets an unsold cat, Fukumaru, at a pet store. Fuyuki is not good with animals but decides to get Fukumaru after being attracted by it. Since then, Fuyuki's life changes as Fukumaru starts living with him.

Ojisama to Neko

2021