She asks Usagi to locate the other reincarnated Sailor Guardians, find the princess and protect the "Silver Crystal", an item of immense power.

Usagi's critical reception has been largely positive and she is recognized as one of the most important and popular female superheroes of all time, and a cultural symbol of Japan.

It was eventually decided that they would instead wear uniforms based on a single theme, whose design was closest to Sailor Moon's original costume concept.

Sailor Moon's original had some small differences, including color changes, an exposed midriff, and ribbons around the gloves and boots.

[5][page needed] These aspects of Sailor Moon's costume are shown in multiple pieces of early artwork, along with a gun and cloak, which were also parts of the original concept.

She also learns that her lover from her past life, Prince Endymion of Earth, has been reincarnated in the present as well as the hero Tuxedo Mask, and seeks to reunite with him.

As Sailor Moon, she sets out with her comrades to fight the villains from her past life and to protect the Earth using the legendary Silver Crystal.

In various adaptations of the series, the two eventually marry, and major plot lines involve discovering that she will become a "Sovereign of the Earth", known as Neo-Queen Serenity, by the 30th century, and give birth to her future daughter, Chibiusa.

[17][18] Regardless of her maturity as a heroine, the manga often portrays Usagi as lazy or unmotivated in applying herself in her civilian life, such as making fun of her tendency to use phonetic writing instead of more formal script or consistently receiving low academic marks.

Characters often comment on the unlikeliness of someone with as many graceless qualities like Usagi being a fierce warrior like Sailor Moon, but her lack of grace is simultaneously described as charming to those around her.

This happens when the mysterious being Pegasus grants both her and Sailor Chibi Moon new transformation brooches – in arc 34 of the manga and in episode 130 of the original anime.

Before her own death, the Queen used the Silver Crystal to give her daughter (and others) another chance at life by reincarnating them in the future, hoping that Endymion and Serenity would be able to find happiness together in their new lives.

In the live-action series, it is Princess Serenity herself who destroys the Moon Kingdom with her uncontrolled uses of the Silver Crystal when Endymion was killed during the war between them in the past.

Usagi occasionally takes the form of Princess Serenity during the series, often at climactic moments when more strength is needed than Sailor Moon can usually access.

At climactic moments, Serenity sometimes gains a pair of functioning angelic wings, such as the final episodes of SuperS and Sailor Stars.

When she is reawakened and possesses Usagi, her singleminded infatuation with reuniting with Endymion causes her to callously disregard the safety of the other guardians and remorselessly strike down her enemies, not even caring if the Earth is destroyed.

Princess Sailor Moon shows no remorse for the fate of the Four Kings of Heaven and she refers to Mamoru as "Endymion" rather than his civilian name.

Princess Sailor Moon successfully destroys the world once again, but Serenity eventually realizes the extent to which she is responsible for this and uses the Silver Crystal to undo the harm she has done.

[24][ISBN missing] During the second story arc, it is revealed that Usagi, as Serenity, will eventually become the queen regnant of a new Silver Millennium called Crystal Tokyo, in the 30th century.

[17][page needed][25] One of her techniques is the comedic "Ultrasonic Wave" (超音波, chō onpa), which involves using the red shields on her hair buns to amplify her loud crying.

The Silver Crystal possesses tremendous power, capable of reviving an entire world from ruin and extending the natural lifespan of all people under its protection.

In both the manga and anime, the Silver Crystal is described as following the heart of its wielder, to the point of either becoming too powerful in the midst of Usagi's confusion, or as inert as a glass bead with her indecision.

However, Queen Beryl stated that Sailor Moon could not unlock the full potential of the Silver Crystal because she had not awakened as a "full-fledged princess" yet.

All adaptations portray the Silver Crystal as possibly the single most powerful artifact in the universe, able to focus the energy of its wielder to perform magnificent feats.

Her powers are vast, able to transport people across time and space, construct strong protective barriers, and repel villains like Sailor Galaxia, while restoring destroyed environments.

In the Japanese version of every Sailor Moon anime series and subsequent related media, Usagi has been voiced by Kotono Mitsuishi.

[30] In the stage musicals, Usagi has been played by 15 actresses: Anza Ohyama, Fumina Hara, Miyuki Kanbe (who played the character with a "cute and high voice"),[31] Marina Kuroki, Satomi Ōkubo [ja], Hotaru Nomoto, Sayuri Inoue, Mizuki Yamashita, Shiori Kubo, Kanae Yumemiya, Natsuki Koga, Tomomi Kasai, Riko Takanaka, Nagi Inoue and Satsuki Sugawara.

The Cantonese version used the name "Yuet-yeh Toei" (using the characters 月野兔, Jyutping: jyut6 je5 tou3), which Levi stated kept the meaning of the moon and rabbit themes, but "unquestionably changed the heroine's nationality".

[35] Usagi influenced the hairstyle and personality of Misato Katsuragi from Neon Genesis Evangelion,[36] and of Gruier Serenity's anime version from Bodacious Space Pirates.

[38] During the 2020 Olympics, Sailor Moon was selected as one of nine internationally recognized anime and manga characters to serve as Tokyo's mascot ambassadors.