[1][2] Takamura's first novel, Ōgon o daite tobe (黄金を抱いて翔ベ, Grab the Money and Run), was published in 1990 and won the Japan Mystery and Suspense Grand Prize.
[2] Two years later her novel Riviera o ute (リヴィエラを撃て, Shoot Riviera), a thriller about an Irish man mysteriously murdered in Tokyo as part of an apparent international espionage plot, was published, winning both the Mystery Writers of Japan Award and the Japan Adventure Fiction Association Prize.
[1][2] Ōgon o daite tobe was later adapted into the 2012 Kazuyuki Izutsu film of the same name, starring Satoshi Tsumabuki and Tadanobu Asano.
[8] Takamura subsequently published a trilogy of novels about the lives of four generations of a conservative political family, starting with Haruko jōka (晴子情歌, Haruko's Love Song) in 2002, continuing with Shin Ria-ō (新リア王, A New King Lear) in 2005, and concluding with Taiyō o hiku uma (太陽を曳く馬, The Horse that Pulls the Sun) in 2009.
[9] In 2016 she published the novel Tsuchi no ki (土の記, Working the Earth), about an elderly farmer coping with the death of his wife, alienation from his daughter, and disruption caused by the 2011 Tōhoku earthquake and tsunami.