A young woman named Ai, is suddenly stranded onto the night streets of Tokyo, Japan, [[IdentityAmnesia with no memories]] whatsoever. The only valuable item she has with her that ties into her past, is her beloved heart-shaped box. With no money and food, Ai wanders the streets of Tokyo, trying to figure out how she ended up on planet Earth. She soon meets an aspiring young rocker/musician named Kent, who shares her same passion for music. She then decides to work at a nightclub called Club Cupid and from there on, her talent in singing, wins her a ticket into fame and fortune of becoming a rockstar diva. But the life of the rich and famous isn't what it's cracked up to be for Ai, as talent-agents and... even demons from another world, try to seek her out and tear her fame (and even ''her'') apart.

The manga series is a collaboration between Music/CourtneyLove, [[Manga/{{Nana}} Ai Yazawa]], Misaho Kujiradou and Stu Levy.
It is also licensed by Creator/{{Tokyopop}}.

* AllThereInTheManual: Important information like character motivations and such are only presented in the volume recaps. Which at times end up more interesting than the actual manga or make readers wonder if they read the same books as the recap writer.
* BarbieDollAnatomy
* BareYourMidriff: In the beginning, when Ai wakes up in an alley. Her clothes are all torn and shredded.
* {{Bishonen}}: Kent, Nora and Takeshi.
* BiTheWay: Kent towards Hikaru to some degree (more like he's not sure about it)
* CampGay: Hikaru fusses about, and squeals at, things like a 14-year-old girl, and has women's clothing.
* ElegantGothicLolita: Most of Ai's outfits consist of this, along with some punk-fashion.
* {{Expy}}: Ai for Courtney Love, Kent for Kurt Cobain.
* FreakyFashionMildMind: Ai has a very rock sense of style, but in the end she's soft at the heart despite her temper.
* GoodWingsEvilWings: Ai has angelic-like wings and is considered the heroine of the series, while Tess and her two sisters have bat/dragon-like wings and is considered somewhat villainous, but [[spoiler: that changes later on.]]
* HalfHumanHybrid: [[spoiler:Ai is the result of her human father (Sei) and her Dougen/Angel mother (Zho).]]
* HeelFaceTurn: [[spoiler:The Witches/Gorgons.]]
* IncestIsRelative: [[spoiler: Ai and Nora were lovers back on Ai-land. Must I remind you that they're actually half siblings. Eeek.]]
* LoveAtFirstSight: Kent and Ai
* LoveTriangle: Kent x Ai x Nora. Plus Hikaru, although he barely counts, merely having an unrequited crush on Kent.
* MeaningfulName: "Ai" means "love" in Japanese. Now, ''who'' came up with this manga, again?
* ThePowerOfLove: At the end.
* RipTailoring: her first performance dress gets the treatment. Some of her later fashions look like they were created the same way.
* SelfInsertFic: Courtney Love pretty much admits that the entire manga is a much more whimsical version of her own life.
* ShoutOut: Now, where have we heard about a [[{{Nirvana}} "heart-shaped box"]] before...
* {{Transsexual}}: Possibly Yoshi. It's kind of unclear.
* WingedHumanoid: Ai once she develops the wings.
* YouRemindMeOfX: Ai claims that Kent reminds her of Nora, a ''certain someone'' from Ai-land.