Aya Igarashi (五十嵐 彩, Igarashi Aya, November 22, 1983 – September 14, 2020[1]), known professionally as Sei Ashina (芦名 星, Ashina Sei), was a Japanese actress.
[2] She was born Igarashi Aya,[3] and assumed the stage name Sei Ashina.
[4][1] She made her acting debut in the 2002 Tokyo Broadcasting System Television series The Tail of Happiness (しあわせのシッポ),[4][1] 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.
[5] She was also known for her role as The Girl, an unnamed concubine, in Silk (2007).
Her body was found at her home in Shinjuku in a suspected suicide.