Originally a musician, Yayoi's hue darkened through her band's anarchistic nature and eventually she was imprisoned in the Rehabilitation Centre. Initially unwilling to become an Enforcer, she ultimately accepts the job with the hope of seeing her friend, Takizaki, again. She is voiced by Shizuka Ito in the Japanese version and Linsay Seidel in the English version, the former of whom also voices Lenalee Lee, Akeno Himejima and Wilhelmina Carmel.