In 2016, Hieda officially became affiliated with 81 Produce.[3] In 2018, she played the role of Momoka Yashiro in the anime series Gundam Build Fighters.[4] That same year, she became part of a 3x3 basketball team for voice actors.[5] In 2019, she became part of the idol group Dialogue+, which is composed of seven other rookie voice actresses;[6] the group's first single "Hajimete no Kakumei!" (はじめてのかくめい!) was released on October 23, 2019 and the title song was used as the opening theme of the anime series High School Prodigies Have It Easy Even In Another World.[7][8] She also began playing the role of Maika Takatori in the mobile game CUE!.[9] In 2020, she was cast as the character Misa Ilioroagu in the anime series The Misfit of Demon King Academy and as Miyako Muguruma in the anime series Warlords of Sigrdrifa.[10][11] In 2021, she played the role of Yuzu Izumi in Bottom-tier Character Tomozaki.[12]