This episode marked the first appearance of the Sailor Starlights, Sailor Iron Mouse, and Phage, as well as the first use of Star Serious Laser. It also featured the first onscreen appearance of Sailor Galaxia, whose disembodied voice had already been heard in two previous episodes.
Starlight Honeymoon Therapy Kiss, Sailor Moon's new attack, was officially named in this episode.
The opening sequence was updated for this episode to include Sailor Galaxia and the now unshadowed bodies of the Sailor Starlights.