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It was a known fact in their world that Miss Fortune loved Chat Blanc and that Chat Blanc loved Miss Fortune. The two would do anything for each other, even kill. This had some of the other forever akumatized people calling them yanderes, but neither cared. They loved their partner and would do anything for them and their happiness.
Anything.
Miss Fortune was the one to set the precedent.
It had been directly after her akumatization.
Sitting and weeping above Chat Blanc’s broken body, Ladybug had felt nothing but sorrow and rage. Even as her partner had been the first to fall to akumatization, she had held strong and it was made easier when he was able to ignore Hawk Moth’s call at first. Together they had stormed the Agreste mansion and cornered the villain, ready to take the miraculous from him when the older man went on the offensive.
Ladybug had been able to block the majority of his blows, but when one knocked the wind out of her and sent her sprawling across the room, Chat Blanc had stepped in.
Going toe to toe with his own father, Chat had managed to hold his own… until Hawk Moth… Gabriel played his trump card.
Now they knew what had happened to Emilie Agreste.
In his overwhelming anger and grief, Chat had gone a little ballistic and Gabriel had taken advantage of his raging emotions: swiftly beating the young teen senseless and within an inch of his life.
“What a useless and pathetic excuse for a son. Can’t even win with such magnificent power in his hands!”
Ladybug had gone to him immediately, only caring about his health and his safety. Gabriel had seized the opportunity: akumatizing her right on the spot.
This would prove to be a fatal error… for him.
The moment he tried to create a connection and have her hand over her miraculous, he was surprised and astonished when the tether between him and the akuma snapped yet somehow, Ladybug remained akumatized.
“What… How! Ladybug-”
“I’m not Ladybug anymore. I’m Miss Fortune.” She smiled as she lifted her hand and saw the dark energy gathering there. “You tested your luck with me and you failed. Now it’s time for your justice.”
Fear entered Gabriel’s eyes and he held his staff towards her. “I recall your akuma!” When nothing happened, he became frantic. “Heed my call! I recall your akuma!”
Miss Fortune continued to stroll towards him, not worried in the least. “Sorry, Gabriel. The akuma is a part of me now. No taking it back.”
Gabriel turned to run and Miss Fortune’s smile widened.
“Miss Fortune’s Fate.” The dark energy intensified and she circled her finger in the direction of the escaping villain. Suddenly he froze and started to struggle, as if tied up in ropes, before he fell to the ground where he had stood. “No getting away that easily, Gabe. It’s time to rid Paris from your terror once and for all.”
The screams of a man in agony could be heard echoing all throughout Paris.
When Miss Fortune had finished with him, she had quickly seen to her love. Chat wasn’t hurt as badly as before and Miss Fortune was able to nurse him back to his full health.
Unfortunately, she didn’t notice the flurry of white butterflies turning purple and escaping out into the streets of Paris.
That’s how so many people came to be akumatized and with Ladybug and Chat Noir gone, there was no one to fix it.
No one cared.
Chat Blanc was quick to show reciprocity to his lady for her bloody show of love and support.
When different akumas began to fight over Paris and divide it into territories, he made sure to get his love the spots she wanted. These included her parents' bakery, the spot on the stairs where they’d had their first kiss, and the Eiffel Tower.
Of course, these claims didn’t go without a fight. Chat had to warn Weredad and Qilin against fighting him. He didn’t want to have to kill Miss Fortune’s parents even if she claimed she didn’t care. He did have to kill quite a few people who refused to acknowledge her claims of the stairs and tower, even when she assured him she could handle it herself.
He knew she could, but he wanted to do something nice for her.
That’s when it hit him.
The next day, Chat showed up to their established love nest with the head of a certain fox that had always pestered her.
She had thanked him with many kisses that had left him dizzy.
When a certain Copy Chat arrived back on the scene in search of the villain formerly known as Ladybug to steal her away from her kitty and claim her, Miss Fortune made sure to show him that there was only one chatty cat for her.
Chat had returned home with questions and was quickly informed of why there were a set of black cat ears resting on their mantle.
When a new akuma appeared on top of the Eiffel Tower proclaiming to be the most powerful akuma there ever was and that a stupid little bug was no match to the power of a great dinosaur, Chat had told his lady to sit down and rest. He would take care of the idiot.
No one insulted his lady and got away with it.
No one who got to live and tell the tale at least.
The cataclysm could be seen from all of Europe and Asia. Even those in the states swore they saw the night flash white for a couple of seconds that night.
Pretty soon, word had spread not to mess with the unofficial and unrivaled king and queen of the akumatized. They were the most powerful akumas to walk the face of the earth and anyone who crossed either of them were in for a long and painful death.
On rare days, someone decided to test their luck and try the power couple and, because of their bravery, they would be allowed to choose their fate:
Die by the hand of the white cat of destruction
Or die by the dark creation of misfortune.
After a while, no one decided to try their luck against fate.