Fighter's Secret Identity: The Shocking Super Transformation

Seiya, Taiki, and Yaten land lead parts in a school musical, but the production's director rides Seiya relentlessly, insisting he is holding back. The pressure bleeds into class, where both Seiya and Usagi flounder on a math exam and Seiya erupts in frustration. When Rei offers to host a group study session, the three boys beg off, citing rehearsal.

The director eventually removes her glasses and Rei recognizes her as Sister Angela, a nun from her Catholic school, stunning everyone. Away from the theater, the villain Chuuko Nezu leafs through magazines and settles on Akane Gushiken, the very woman running the musical, as her next mark.

Seiya trails Akane to the church to challenge her. She explains she refuses to abandon any of the many things she loves, pouring full effort into each, and though she praised the trio's concerts, she finds his stage work hollow. She promises to keep pressing him until his true brilliance shows. Moved but stubborn, Seiya returns to rehearse alone late into the night while Akane watches, satisfied.

When Akane steps out for drinks, Nezu corners her, drops her disguise, and extracts her Star Seed, which dims and disappoints the villain. A fresh Phage, Sailor Director, emerges with orders to kill Seiya, and Iron Mouse retreats into a phone booth. As the monster pelts him with high-speed film, Seiya summons a microphone, shouts Fighter Star Power, Make Up, and his body shifts into that of a woman: he is Sailor Star Fighter. She flattens the Phage with Star Serious Laser, but Sailor Moon and Sailor Mars intervene before she can kill it. Mars trains Mars Flame Sniper on Fighter to hold her back while Sailor Moon heals Akane with Starlight Honeymoon Therapy Kiss.

Fighter parts with Sailor Moon and Mars hoping they are not foes, and the next day Seiya scores a ninety-eight on the make-up exam. The closing shot morphs an unknown woman's silhouette into Sailor Moon, echoing Seiya's search for a lost person. This episode debuts the transformation phrase Fighter Star Power, Make Up, and the Sailor Change Star item.

The whole storyline is original to the anime; the manga never staged it, and there Seiya was always a woman who merely wore male clothing as a disguise. Various dubs reinterpreted her gender differently, and the Italian version split Akane into twin sisters, one a director and one a nun, likely to avoid depicting a nun with a secular career.