Ikue KITAHARA: technical assistant, 2022-2024
Kaoru NAKAMURA: technical assistant, 2023-2023
Ayako SAKAI: technical assistant, 2017-2021
Sayoko AKASHI: technical assistant, 2021-2021
Yoshiko IMAI: technical assistant, 2019-2020
Mone MORIKAWA: graduate student, 2018-2019
Suzuko KOBAYASHI: technical assistant, 2015-2018
Kohei HIDA: technical assistant, 2015-2016