"Live fast, die young, leave a beautiful corpse."
No one suited these words like Julie d’Aubigny. A master duelist, opera singer, and bisexual celebrity of 17th century France.
Julie's father was in charge of training Louis XIV’s pages, he would train during the day, and visit gambling dens, bars, and brothels in the evenings. As her father was less-than-present in her life, she took up swordplay as a child. Her father in an unusually wide bout of wisdom realised he could never stop her, so he taught her everything he knew to ward of any potential suitors.
Starting her streak of independence, she began sleeping with her father's boss but this foolish man became frustrated with her uncontrollable nature and arranged for her to marry a mild-mannered clerk so she may have a leash set upon her. She responded in the only way she could, by shacking up with a wandering master swordsman and beginning her travels through France. She sung in various taverns across the land to earn a living.
She was already so skilled with the sword at this point in her life that she quickly surpassed her lover, dumped him and declared herself "tired of men" and started sleeping with as many women as she could. She visited a local merchant’s daughter most frequently and began an entirely physical relationship. The merchant was desperate to separate the two, so he sent his daughter to a convent. Julie simply joined the convent herself, and slept with her paramour in the house of God. Soon after, an elderly nun died, and d'Aubigny did as expected, by setting the whole convent on fire. After three months, she got bored and dumped her girlfriend back at her parents’ house and vanished.
Julie was sentenced to death for this act of chaos so she approached her dad’s boss and first lover, and through his influence, convinced Louis XIV to revoke her sentence. Louis did so, and she joined the world renowned French opera, a far cry from a penniless untrained street performer. This suited her love for the theatrics as she got to play roles such as Medea and Dido which she adored. Her photographic memory allowed her to memorise scripts after a single reading.
In equal parts a lover and a fighter, she slept with or fought most members of the opera at some point. She often duelled men over their lovers and seduced many chambermaids over the years.
Once when she was being harassed by a group of drunk men, so she challenged them and made sure they were all left with multiple stab wounds. The next day she felt bad about stabbing one of them as he seemed rather nice, handsome and just happened to be friendly with an unsavoury group of characters, so she went to his room to see how he was doing, naturally she seduced him and spent three weeks of passion with him. Although it is rather easy to seduce men, but not after stabbing them multiple times. Though their relationship barely lasted a month, the two remained lifelong friends.
Later in life she attended a royal ball dressed as a man. She spent most of the evening courting the most beautiful woman she could find, which naturally aggravated the men trying and failing to seduce the woman. When Julie made-out the young lady in the most public place possible, the men challenged her to a duel. She dragged them all out of the palace and "accidently" killed them . This would have earned her the death sentence but the drama entertained Louis XIV so much he pardoned her. Again. However she did not get off scot free and there was a lot of heat on her, so she moved to Brussels where she had a torrid affair with a German prince.
She returned to the Paris Opera as its star and died five or so years later of unknown causes.
She lived entirely in the moment, doing what would make her happy; she had an allergy to boredom and as soon as something became tedious, she would drop it and move on. Despite her audacious nature, she is very intelligent. She loves to sing, act and fight.
Being summoned into the Grail War, her wish is to "Have a good time." She would likely not take the war serious at first, seeing it as an opportunity to fight and bed the best in history. She adored the play 'Medea' and if she were to meet the titular witch, she would get highly excitable and ask for her autograph. Then immediately try to sleep her.