Ohgo began acting in 2000 when she was seven, then she joined Sunflower (Himawari), which is a theatrical company. She debuted with the company at the Meiji-za in Story of a National Thief. In early 2005, Ohgo debuted in her first major film, Kita No Zeronen (北の零年, a.k.a. Year One in the North), directed by Isao Yukisada, with the well-known actor Ken Watanabe, where she played the role of Tae Komatsubara. In December 2005, she debuted in Hollywood with Memoirs of a Geisha, directed by Rob Marshall, where she played Sakamoto Chiyo, the child version of the main protagonist Nitta Sayuri (the adult version is played by Chinese actress Zhang Ziyi). During the same year, she also won the Japan Film Critics Award for Best Newcomer. In 2006, Ohgo also starred in Baruto no Gakuen (バルトの楽園, a.k.a. Symphony of Joy), which was released in June 2006 and is set during World War I, where she plays a girl of mixed German-Japanese heritage trying to find her German father who may be held there. In 2008, she began lending her voice to anime in Michiko to Hatchin as Hana (AKA: "Hatchin"). She also provided the voice Kaita in Professor Layton and the Diabolical Box. She worked at CATARMAN until 2013.
Memoirs of a Geisha
(Chiyo)
Gu Gu, the Cat
(Ca Va)
Into the Faraway Sky
(Hiharu)
The Kirishima Thing
(Aya Sawashima)
Kamen Rider Zero-One The Movie: REAL×TIME
(Mashirochan)
Happy Island
Year One in the North
さすらい署長風間昭平スペシャル 塩屋岬いわき殺人事件
The Women in the Lakes
Omokage
Your Story
(Natsumi Takahara - high school)
Soup
(Ayumu Yano)
The Ode to Joy
(Shio)
私は屈しない〜特捜検察と戦った女性官僚と家族の465日
I Was a "Secret Bitch"
(Aya Kimura)
Tales of the Bizarre: 2011 Fall Special
Tales of the Bizarre: 2017 Fall Special
Oppai Volleyball
(Mikako (young))
Somewhere in Kamakura
Akira Hamura: The World’s Most Unfortunate Private Investigator
(Akemi)
Michiko & Hatchin
(Hana 'Hatchin' Morenos (voice))
Sekushii Boisu Ando Robo
Dr. Coto's Clinic
Shibatora
(Mizuki Hosho)
Sexy Voice and Robo
(Niko Hayashi)
New Year's Card from the Sparkling Sea
Tokyo Alien Bros.
Tomorrow, Mom Won't Be Here
(Otsubone)
Destiny-Like Love
(Ayase Riri)
Kamen Rider
(Nurse Mashiro-chan)
Unsung Cinderella, Midori, The Hospital Pharmacist
(Marie Shinohara)
Galileo
(Akiho Yajima)