
Seiko Iwaido (岩井堂聖子, Iwaido Seikō, born February 23, 1984) is a Japanese actress, she was formerly known by the stage name Mai Takahashi (高橋 真唯), Iwaido made her acting debut in 2004, playing the role of Amano Sora in TV Asahi's Sky High 2. In 2005, she made her film debut as Fumie Hayashida in Simsons. Since her debut Takahashi has worked with many prominent directors; playing Kawahime, the River Princess, in Takashi Miike's horror-fantasy children's film Yokai Daisenso (released in the U.S. in 2006 as The Great Yokai War.) She also appeared in Sion Sono's 2005 film Kimyo na Sakasu (Strange Circus), Yoshihiro Nakamura's Busu (The Booth, 2005), and in Hitoshi Yazaki's 2006 film Strawberry Shortcakes. In 2008, she appeared in the live action film Pyū to Fuku! Jaguar.
She has also voiced the characters Yuri Kishida, Kanae and Ryuuko Tagawa in the 2006 video game Siren 2, and played 'The girl in red' in the movie adaptation of the game Siren in the same year.
Along with her acting career Mai Takahashi has also appeared in magazines, and has also released two photobooks.

The Great Yokai War
2005 · as Kawahime

Forbidden Siren
2006

Strange Circus
2005 · as Teenage Mitsuko

Welcome to the Quiet Room
2007 · as Sae

Fish Story
2009 · as Haruko

Isn't Anyone Alive?
2012 · as Nana

Rough
2006

Strawberry Shortcakes
2006 · as Kondo

Bitter Honey
2016 · as Woman

Yellow Tears
2007 · as Yumiko

Simsons
2006 · as Fumie Hayashida

Pure White
2016 · as Yukina Shibutani

パンクしそうだ
2017

A Girl in the Sunset
2008 · as (segment "Musume Gokoro")

SOUL TRAIN
2006

Kazuo Umezu's Horror Theater: Present
2005 · as Yuko Suzuki

Laughing Lucky Cats
2017 · as Sachiko Nakazawa

Almost 40
as Diga