Junya Tōsaka owns the Rhapsody music label. He belongs to the influential Tōsaka family, whose shadowy power shapes the label's operations. His father, the legendary rock singer Kyōji Tōsaka, is deceased. Junya's older sister, Akari Tōsaka, practices law. He features in the voice drama "Rhapsody Episode 0," chronicling the founding of the Rhapsody label and exploring the Tōsaka family's past, delineating Junya's involvement in its establishment.