[1] Kamiya joined Kamen Joshi as a trainee as part of Oz in June 2012 and debuted as an original member of Steam Girls in October.

As a member of Kamen Joshi, she performed ten live concerts a week in Akihabara, in addition to rehearsals, dance and vocal training, and photo and video shoots.

[9] In October 2017, Kamiya launched her solo YouTube channel, which debuted with over 47,000 subscribers and over 3.7 million views, the second highest number for that week among Japanese entertainers.

[16] Kamiya is a noted motorcycle enthusiast who has appeared in bike magazines such as Zokeisha and collaborated in promotion campaigns with Japanese manufacturer Suzuki.

[4] As a child, Kamiya was diagnosed with strabismus, which caused her to become insecure as a performer, and developed symptom including double vision, dizziness and headaches.