Biography
Sei Ashina was born Igarashi Aya, and assumed the stage name Sei Ashina. Prior to her acting career, Ashina was a model. She made her acting debut in the 2002 TBS Television series The Tail of Happiness (しあわせのシッポ), modeling that year in magazines including Shogakukan's CanCam and Shueisha's Pinky, and was best known for starring as Hime in Kamen Rider Hibiki. She was also known for her role as The Girl, an unnamed concubine, in Silk (2007).
Filmography
Cast Credits

BILIBILI MACRO LINK 2023
Character:
MOVIE • 2023

Ano Ko ga Umareru...
Character:
TV • 2020

Last Line Detective Tsuyoshi Iwakura
Character:
MOVIE • 2020

AI Amok
Character: Maika Hayashibara
MOVIE • 2020

The Ship of Theseus
Character: Noriko Sasaki
TV • 2020

Good People
Character:
MOVIE • 2019

The Tragedy of the “W” Prefectural police
Character:
TV • 2019

Hand of God
Character:
TV • 2019

A Murder Is Announced
Character: Tsukimi Usako
MOVIE • 2019

One Page Love
Character: Yaginuma Yoriko
TV • 2019

Kishu Hanshu Yoshimune
Character:
MOVIE • 2019

The Good Wife
Character: Misaki Kuriyama
TV • 2019

The New King
Character:
TV • 2019

It Was Fun Last Night
Character:
TV • 2019

Perfect World
Character: Aoi Nagasawa
MOVIE • 2018

Killing for the Prosecution
Character: Driver
MOVIE • 2018

Kuroshoin no Rokubei
Character:
TV • 2018

Neck Bowed in the Rain
Character: Ofumi
MOVIE • 2018

Uta Monogatari: Cinema Fighters Project
Character: Kaori Kitada (segment "Our Birthday")
MOVIE • 2018

Daisy Luck
Character:
TV • 2018