D/Zeal is a duo unit from the game âTHE IDOLMA@TER MILLION LIVE! THEATER DAYSâ. The unit consists of two characters, Mogami Shizuka and Julia (Idolmaster), who are known for their rock music style. They debuted in the event âMillion Live Thanksgivingâ and have songs like âHarmonicsâ and âHanamuke no Toriâ under their discography. D/Zeal represents a single attribute unit from the Fairy Stars.