Career
In 2012, her debuted in the drama, Iki mo Dekinai Natsu. In 2014, Koshiba"s first lead role was in the film, Kiki"s Delivery Service. In her work, she was awarded the Best Newcomer Award in the 57th Blue Ribbon Awards.
小芝 風花
In 2012, her debuted in the drama, Iki mo Dekinai Natsu. In 2014, Koshiba"s first lead role was in the film, Kiki"s Delivery Service. In her work, she was awarded the Best Newcomer Award in the 57th Blue Ribbon Awards.