Although Mamoru’s reactions to the transformation sequence are similar in PGSM and the Anime, the placement and timing of the event impacts Mamoru’s actions immediately afterwards. In PGSM it is a trigger to change his perception of Usagi/Sailor Moon. It also forces him to consider his motives in helping her and searching for the Phantom Silver Crystal. In the anime, it is one of the motivating factors to step in the line of fire that leads to the revelation of the Moon Princess. There many parallels in the critical moment when Mamoru learns Sailor Moon’s identity. In both mediums, Mamoru is shocked and spurred to action.
In PGSM episode 7, Mamoru and Usagi are trapped in an enchanted mirror maze. It is the first time where they are alone for an extended amount of time. They argue, he grabs her hand, and then when she thinks she is alone, she transforms. The cut scene where Mamoru’s expressions are shown are priceless. You can literally see the emotions etched in his face: confusion, shock, denial. This is when Mamoru realizes that Sailor Moon is Usagi, the same girl he thinks he can’t stand to be around.
Similiarly in the Anime, Mamoru and Usagi are trapped alone in an elevator when Sailor Moon’s identity is revealed. Probably moments away from transforming into Tuxedo Kamen, Usagi shouts the phrase to initiate her own transformation. Like PGSM, the scene cuts towards Mamoru. He gasps with shock, then thinks, “It’s her! Serena is Sailor Moon.” (Note: in my mind, I’ve seen this a thousand times in the Dub version.) What is not shown is Usagi grabbing Mamoru’s hand as they leap out of the stalled elevator to escape a fiery death. In those moments, the irony of the situation doesn’t escape his notice.
Now, in PGSM, we are not that far along in the arc, but Mamoru still has feelings for Sailor Moon. After battling Jadeite, he remembers when Sailor Moon saved his life and that she sang “C’est La Vie.” He relives the day in the amusement park. Although she was spending it with Motoki, he sees a very different side of Usagi. Instead of tossing it out, Mamoru keeps the handkerchief that Sailor Moon wrapped around his injury when he was Tuxedo Kamen. He has physical proof that Usagi and Sailor Moon are the same person. The question remains whether he can he reconcile the two people in his lives and his feelings for them, which are very confused at this point. Since it is unclear whether he is a friend or a foe either as Tuxedo Kamen or as Mamoru.
In the Anime, Mamoru’s feelings come to the surface when he reveals his identity as Tuxedo Kamen and steps in the way of the dark crystal shard that is meant to save Sailor Moon. It is obvious that Mamoru care for Usagi. The difference is now he knows that Sailor Moon and Usagi is the same person. In the same few moments, he remembers his identity as Prince Endymion.
Although the placement of this event in the story differ in PGSM and the Anime, the impact on later events in Sailor Moon are undeniable. It is turning point that changes Mamoru character.
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