Alouette Fleur Kamiya was born as the fifth child and eldest daughter of the Kamiya family - an affluent and influential group that plays a fairly large role in X28s social system. Despite the cultural view that multiple children are a sign of bad luck, the family grew larger with the intention of running like a business. They have ties to the Caesar Organisation and work closely to continue the control over X28.

Alouette's family home is the host for many social events that are mostly coverups for shadier dealings and affairs. They regularly entertain guests and run these events like a well oiled machine thanks to the employment of the children - workers who were brought up to serve and not complain. If not to support the family 'business', the Kamiya children experienced rigorous and unforgiving training from a young age in order to enter the Org as patrons and keep amicable ties with it. The siblings - in order of eldest to youngest - are as follows: Stephane, Takehiko, Etienne, Kiyoshi, Alouette, and Tamiko.

Born as the first daughter, Alouette's role in the family was determined before she even took her first breath - she was to be the beautiful showpiece, a front to shadier dealings. She was blessed with reserved, haunting beauty that was honed as soon as possible in order to fulfil her predetermined purpose. As a young child there was no time for frivolity, and instead she was kept a close eye upon to avoid the risk of anything happening that could alter her appearances. Alouette also began a strict regime on how to maintain her beauty very early on of which she still upholds today.

Once she grew old enough, her parents decided she was to pick up the violin and learn to play both as a soloist and part of an orchestra to the many guests they entertained. She learnt fast and fit right into the space carved out for her. Around this time was when she was truly exposed to her family's ties with the organisation, and she became completely aware of her status as a pawn. This was also when she made her debut as the family jewel; the knowledge of her performing bought in a lot of guests and attention, which unfortunately for her was mostly unsavoury. She was subject to frequent dubious advances by adults a lot older than her that only got worse as she grew older. Experiencing this and witnessing the affects of things like Pandemonium - a drug that keeps a tight hold on X28 - alongside the obedience & submission engrained into her upbringing meant she hardened and became almost like a marionette.

Alouette's life remained fairly consistent as she grew into adolesence; she continued to perform and entertain guests, and continued to allow her every move to be decided for her. She remained disconnected from most of her siblings - a couple even began to harbour malcontent towards her due to the attention she received - and very much got used to the idea of being a tool contributing to a larger purpose. That was the case until two of her elder brothers - Takehiko and Etienne - died whilst working for the org. Takehiko's passing meant very little to her, she felt nothing towards him afterall and her mourning was just a formality, but Etienne's stuck with her a little. Despite their environment, something in him told him to look out for Alouette so the two of them were closer than expected. It was nothing major, he would just be the one to offer her tissues after a harsh scolding or to keep a particularly close eye on her if a guest was too touchy with her.

To save face (and keep ties with the Caesar Organisation), the Kamiya's plan changed and Alouette was dragged up to replace her two brothers - specifically Etienne. She was thrown into gruelling training in order to fill the space he left in Plutus almost perfectly; thanks to her utter obedience, she quickly gained enough skill and knowledge to become a recognised patron. It was a major adjustment for her and a very big change; she didn't know quite how to interact with people in this setting, which granted her the reputation of someone creepy and unapproachable. It wasn't like she cared very much in the beginning, however, and she instead threw herself into work & work alone, existing solely to carry out jobs with no downtime. She became a dutiful follower of instruction and strived (she still does) to keep up with her unit mates, especially her High Priestess Kenta, in order to prove her worth & ensure she continued to carry out her purpose.

Years have passed and Alouette is still a dedicated and recognised member of Plutus; she has found herself opening up more. She's found a family experience amongst them and values each one of them greatly - even if it appears she's apathetic. Alouette has managed to find more of a work/life balance and has begun to show signs of her coming into her own person & forming her own opinions on things. She does, however, experience periods of derealisation and struggles with the concept of her humanity after spending so many years as an appendage over a person. Fortunately, she now has ways of combatting this and people who care enough about her to help.

Alouette has also developed romantic feelings towards Kenta and the two of them are partners; they spend a lot of time comfortably silent in each other's presences. She's discovered her liking of physical affection after many years lacking it, but thanks to her asocial reputation very few people actually engage her in a friendly manner which does bring her sadness; she doesn't want to be viewed as creepy. Luckily for her, her unit mate Lee has seen past her exterior and the two of them are very close & affectionate.

Her elder brother Kiyoshi is another patron in the Caesar Organisation; he belongs to the Demeter unit. Despite beginning his training before Alouette, she 'beat' him in terms of joining the org - something he holds against her. The two of them don't get along but it is mostly one-sided on Kiyoshi's part. He's jealous of the attention she received and is so clouded by his distaste, he fails to see how the attention was harmful and how Alouette had no intentions of joining the Organisation or taking his place. He wasn't trained to fit Plutus, whereas she was, which is why she was selected first. Alouette does sometimes attempt to be courteous with him but she is usually ignored. She does hope that one day they can at least maintain a coworker relationship.