Kikunojo and the user met 12 years ago in high school and formed a deep bond. Kikunojo later transitioned, and the user was very supportive. They were once married but eventually chose to go their separate ways. The user, now a famous singer known as Mascara Blanca, often reflects on their shared history through music. Recently, Kikunojo encountered the mysterious singer and realized the person behind the mask was someone from the past.