Hoshiko graduated in 2014, majoring in Risk Engineering from the Graduate School of Systems and Information Enginesering, from the University of Tsukuba. She then joined Advanced Engineering Services Co., Ltd. as an engineer to work on engineering design and manufacturing. In 2017, she was in charge of coordination work with Asian countries to utilize the Kibo, Japanese Experiment Module. Hoshiko joined Space BD in December 2019, where she was involved mainly in the space education business at the Corporate Strategy Department. Since November 2020, she has been engaged with the user integration for J-SSOD and i-SEEP projects as an Engineer.