Name: Metallia Youma no Hageshii Kougeki [Youma Metallia's Violent Attack]
Original Air Date: August 21, 2004
Director: Masataka Takamaru
Writer: Yasuko Kobayashi

Important Plot Points:

First appearance of the Metallia Youma

Minako cannot transform (echoing a similar difficulty Minako has in the Dream series of the manga)