[4][5] Her parents initially opposed her decision, prompting her to secretly register for auditions but she was unable to take part as such sessions took place in Tokyo or Fukuoka Prefecture; they eventually gave their support upon being asked again.
Created with input provided to the staff in interviews, Chiyu has various similarities with Tsumugi such as fluency in English due to her overseas education, which allows her to mix languages while speaking.
creator Takaaki Kidani regarded Tsumugi's bilingualism, which is featured in RAS songs, as an important asset in the franchise's growth overseas.
[14] Alongside RAS member Reo Kurachi, Tsumugi is a host on the franchise-focused variety show Radio RIOT.
[16] In the project's debut concert on July 20–21, she performed with Photon Maiden on the first day before joining Raise A Suilen for the opening act on the second.
[17] As Saki is also a DJ, Tsumugi explained in a 2020 interview with Anime News Network that the character allows her to "[appreciate] the joy of DJing through my role again.