''Princess Comet'' aka ''Cosmic Baton Girl Comet-san" is a MagicalGirl anime about Comet, the 12-year-old princess of [[MagicalLand Harmonica Star]], who is sent to Earth in order to find the prince of Tambourine Star. Comet quickly becomes fond of life on Earth and the people who live there, but her life is made more complicated by [[DarkMagicalGirl Princess Meteor]], a rival princess who is also searching for the prince and wants to claim him for her own.

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!!This series provides examples of:

* AnnoyingYoungerSibling: [[spoiler:Averted for Tsuyoshi and Nene.]]
* CheerfulChild: Everyone under age 15. [[spoiler:Subverted with Meteor, who is too [[JerkAss jerkish]], and Shun, who is too [[WiseBeyondTheirYears mature.]]]]
* CleaningUpRomanticLooseEnds: [[spoiler:Meteor and Shun.]]
* CuteWitch: Comet is this type of MagicalGirl.
* DarkMagicalGirl: Meteor
* [[spoiler:DefrostingIceQueen/ TookALevelInKindness: Meteor grows less obnoxious and more caring to others as the series progress.]]
* EasyAmnesia: [[spoiler: Keisuke]]
* EverythingsBetterWithPrincesses
* FairyCompanion: Rababou (a dog-like creature) and Mook (a bird-like creature). [[spoiler: And Rabapyon (Aunt Spica's fairy companion, who is rabbit-like creature).]]
* FishOutOfWater: Comet gets hit with this hard when she first arrives on Earth. By the end of her first day, she's reduced to tears because she can't figure out how to get food, since she has no Earth money.
* HalfIdenticalTwins: Nene and Tsuyoshi.
* HarmlessVillain: [[SlidingScaleOfAntiVillains With the dash of type 1 anti-villain]], thanks to her pride. [[spoiler:In fact, [[CutLexLuthorACheck she's more effective in doing good than doing evil things.]]]]
* IdolSinger/ TeenIdol: Shun Imagawa, a RareMaleExample. [[spoiler:Also a rare example where the idol looks more like [[OlderAndWiser late]] PaulMcCartney than JustinBieber.]]
* {{Jerkass}}: Meteor
** [[spoiler:HiddenHeartOfGold: That doesn't mean she's totally heartless, though. Sometimes she even willingly helps Comet with problems she can't handle on her own. It helps that in such cases, Comet doesn't hesitate to ask nicely.In some cases, she even helps Comet ''before'' Comet asks for help, especially if the problem irks her pride.]]
* LoveHurts: [[spoiler:When the Prince is found and she had to return to her world, Meteor decides to [[LaserGuidedAmnesia wipe out Shun' memories about her]]. Comet [[WhatTheHellHero calls her on this]], which is pretty strong because Comet [[NiceGirl is such a sweet girl]] she ''[[TheMessiah rarely]]'' [[TheMessiah lost her temper]], also because Meteor [[CharacterDevelopment had grown into likeable character at this point]]. [[IDidWhatIHadToDo Meteor's]] [[ShutUpKirk response]] [[TearJerker is one of the most poignant scene in this series]]. PlayedForLaughs in the last scenes of the series, where Meteor comically regrets her decision to mindwipe Shun.]]
* MagicWand: They don't call her "baton girl" for nothing.
* MuggleFosterParents: Comet is taken in by a kindly muggle family during her stay on Earth. On the other hand, Meteor barges into an old couple's house and casts a spell on them to make them think they've always known her.
* NiceGirl: Comet, in spades. She won't look out of places as [[Manga/CardcaptorSakura Sakura's]] friend.
* NiceGuy: [[spoiler:Shun Imagawa, UpToEleven.]]
* [[NiceJobFixingItVillain Nice Job Fixing It, Anti-Villain]]: *sigh* She should listen to Mook more.
* PantyShot: There is a brief one in episode 4 while Comet is climbing onto a boat.
* PrincessesPreferPink: Well, heroic princesses do.
* PunchClockVillain/ OnlySaneMan/ [[spoiler:HypercompetentSidekick]]: Mook, true to her name, is not terribly thrilled to be Meteor's partner and spends a lot of time trying to dissuade Meteor from carrying out her nastier ideas. [[spoiler:Since most of her "nastier" ideas tends to put her on the ''huge'' risk of making fool of herself.... Yeah.]]
** Rababou tends to act as OnlySaneMan, nagging Comet to do her job to find the Prince while all Comat wants is to explore the world.
* RebelliousPrincess: Comet is a very mild-mannered example. When we first meet her, she's at a betrothal party complaining about her uncomfortable ball gown and wishing she could just ditch the party to go star-gazing, and when she's sent to Earth to find the prince, she's far more interested in exploring this strange new world than she is in chasing after some guy she's never met.
** Interesting cases with Meteor. [[spoiler:After Comet denounces her betrothal with the Prince of Tambourine Star near the end of the series, Meteor does the same, announcing that she has no intention of marrying a wishy-washy Prince. She rather find her own way to become queen. Hearing this, her mother, who is the one who pushed her to pursue relationship with the Prince. actually ''pleased'' with this answer, since this means that Meteor had develops a backbone befitting for a queen.]]
* RedEyesTakeWarning: Meteor
* TheRival: Meteor
* RoseHairedGirl: Comet
* RoyalBrat: Meteor is as obnoxious as Comet is sweet.
* RunawayFiance: Comet considers running away from the party where the prince will be betrothed either to her or Meteor, only to find that the prince beat her to it by running away himself.
* {{Sleepyhead}}: Shun Imagawa. Justified; Being a TeenIdol is very demanding job, and he took it ''very'' seriously; [[spoiler:Even ''his own manager'' thinks that ''he is too sweet'' to his fans.]]
* ThemeNaming: The other worlds all have musical names: Tambourine, Harmonica, Castanet, etc.
* TransformationSequence
* TransformationTrinket: Comet's pendant. It also serves as a {{hammerspace}} for Rababou to hide in.
* VerbalTic: Rababou says "-bou" after all his sentences.
* [[WellDoneSonGuy "Well Done, Daughter" Girl]]: A mild case with Meteor. [[spoiler:[[StealthMentor In reality, her mother actually wanted her to develop her own strong personality and ability to decide for herself, so she could be a strong queen.]]]]
* WiseBeyondTheirYears: Mild case with Comet, but definitely strong with [[spoiler:Shun Imagawa.]]
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