Name: Rei no Me no Mae de Minako ga Henshin! [Minako Transforms in Front of Rei's Eyes!]
Original Air Date: January 31, 2004
Director: Takemitsu Sato
Writer: Yasuko Kobayashi

Important Plot Points:

First mention of Minako's illness

Minako and Rei begin to be friends and rivals

Minako first transforms with "Venus Power, Make Up" on camera

Rei discovers Minako is Sailor Venus

Venus first uses the "Venus Love-me Chain" attack