Magma wyrm elden ring

Just full warning, I have never made a post like this before, so I'm not really sure the correct way to format it or anything, but I made a bleed character and I gave her a cool backstory and I wanted to briefly share it. I am trying to keep it lore friendly, so if my backstory interferes with in game lore at all, please let me know! So with that being said, here is a short version of what I have come up with:
Her name is Sakura, and she is the daughter of the legendary swordsman Okina. When she was born, she had to be cut out of her mother's corpse by her father. Angry with his daughter for the death of his wife, the young Okina cut the eyes from his infant daughter, causing her to grow up never knowing the sight of her homeland of Reeds. Her father eventually forgave Sakura, and he ended up teaching her everything she knows, mostly stuff about combat. Okina was a young mercenary, selling his blade to the highest bidder to be able to provide for Sakura and himself.
By the time Sakura was 8 years old, she was one of the best warriors around, despite being blind. And when she was 10, she killed her first human, a bandit trying to rob her on her way to town. Soaked in the bandits blood, she suddenly had a flash back to her birth. Covered in her mother's blood, only moments before her father cut her eyes out. And then , she started to see. Not her surroundings, but a star of blood. And from that moment on, Sakura became obsessed with blood. She told her father about her visions of the blood star, and how the very appearance of it made her yearn for another kill. Okina did not believe her, and so to prove her point, she grabbed her father's sword and slashed him across the face, blinding him. She then used his sword to cut a deep gash against the side of her mouth, and proceeded to spit up blood onto her father's face, where his eyes once were. And he too saw the blood star, and was instantly enticed by its raging red glow. Okina gathered up the best samurai he knew, telling them of his recent discovery, and the power that it promised. He then began to go town to town with his small army of warriors, spilling the blood of anything, and anyone that they would come across. The more blood spilled, the more powerful they became. The power was they gained was so great, that they even started harming themselves just to feel the might of the blood star. This led to them killing each other, until only the strongest remained. This group of bloody warriors became known as the Inaba, lead by the most blood hungry of all, Okina.
Sakura followed in her father's footsteps, going from town to town with her fellow Inaba, killing without mercy everywhere they went. Eventually, Okina began to feel the call of the Elden Ring, and was drawn back to The Lands Between, not for the throne, but for the mere prospect of tarnished blood. He ditched the Inaba, as well as Sakura on his blood soaked pursuit of power. Sakura, eager for the chance to lead the Inaba, followed her father's lead of tarnished blood to The Lands Between, along with her new army of samurai.
When they arrived in The Lands Between, Sakura and her Inaba were not disappointed. Dozens upon dozens of tarnished had returned to The Lands Between, and their blood was a perfect sacrifice for the Blood Star. But it did not take long for the Inaba to leave Sakura's side, as they searched for their true leader, Okina. Sakura continued her journey without them, killing countless tarnished in pursuit of power. And then one day, she came across a tarnished, wearing a white mask. Normally she would kill her targets swiftly, but there was something different about this one... this tarnished reeked of noble blood. After a brief conversation, she found out that the tarnished was named Varre, and that he was in service of the majestic Lord of Blood. Upon hearing this, she instantly new that that was where she would find her father. No doubt he was on his way right now to kill this Lord of Blood. In order for Sakura to be granted entry to the Lord of Bloods holy land, Varre told her she had to kill three tarnished as a sacrifice to his lord, and to also bring him a rag soaked in the blood of a maiden. Sakura completed the requirements with ease, much to Varres delight. He wasted no time anointing Sakura as a pureblood knight, in service to the Lord of Blood, the dreadful omen Mohg.
Sakura was told not to go to Mohg's holy land of blood until the time was right, but as soon as she was granted the Pureblood Knight's Medal, she used it to transport her to the land of blood, where she found Mohg's Dynasty Mausoleum. She climbed the steps of the mausoleum, killing countless of Mohg's apostles, who were not happy to see her there, until she finally reached a stone lift. When she stepped on the plate in the center of the lift, she was raised up to the highest point of the mausoleum. She stepped through an archway and walked too the end of the great hall, where she found a cacoon. Out of a crack in the cacoon stuck out a long pale, heavily weathered hand. The hand began to shift, and then blood started to pour from the cacoon. After the blood stopped pouring, lay a perfect, round puddle of blood. And out of that puddle, began to grow a figure. A huge, dark creature, with horns and an elegant trident made of gold and silver. This was Mohg, the lord of blood. Sakura started by asking the omen where her father was. Mohg cackled, and promptly told her, "Wherever the blood is." He then told her that he had been approached by Okina, who he offered the life of a demon, in service to Mohg, who would allow Okinas thirst for blood to never go unsated. Sakura, shocked that her father would swear allegiance to another, knew what she must do. Without a word, she threw her naginata into Mohg's chest, unsheathed her katana, and rushed the Lord of Blood...
The battle was quick and violent, but Sakura had beaten Mohg. Drenched in his blood, and hers, she began to have another vision. It was of the blood star again, but this time it spoke to her. It revealed itself to be the Formless Mother, an outer god who wished to rule over the lands between, instead of the Elden Ring. With Mohg dead, Sakura was granted the role of champion, in service to the formless mother. Her purpose was now clear, she had to put her god in a position of absolute power, and she would stop at nothing to reach this goal. She would need an army, and she new the perfect way to find one...
After months of searching, Sakura finally found her father. Following his trail of blood, she eventually found Okina on a snowy hill outside of a church, all the way up in the mountain tops of the giants. Except he was alone. Sakura demanded to know where the rest of the Inaba were, and her father told her. The Inaba were no more. They had lost hope of finding their leader, and had their fill of blood. Now, any that remained were tucked away, seeking nothing more than a good death. Sakura was outraged. Her father had let his blood lust consume him, and hadn't been there to keep the Inaba strong. She drew her Katana and her wakizashi, and challenged the man who taught her everything she knew, to a battle to the death. Okina, who was no longer himself, accepted. To him, his daughter was nothing more than another blood sacrifice. Another kill to make him stronger. He drew his demonic blade, as well as his wakizashi, and assumed a guarded stance. Sakura, who had learned much in the ways of blood magic, stabbed her Uchigatana into her stomach, coating it in her own blood, then yanked it out of herself, now holding a blade of blood, ready to match her fathers cursed sword. And with the first swing, Sakura would start a bloody battle between father and daughter, that would last 12 hours. With each blow on one another, the two warriors would become empowered by blood, giving them an extra edge in battle, and allowing them to ignore any previous injuries. But, every time one of them got hit, the loss of blood would slow them down until they were able to return a hit, once again giving them that edge. Throughout the battle, Sakura noticed this pattern, whilst Okina was in a blood-raged trance, ignoring his experience and focusing only on killing Sakura. And on the 12th hour, Sakura broke the rhythm of the battle, and instead of landing deep, meaning slashes, she began to start making tiny gashes all over Okinas body, while focusing on not getting hit. After a short while of this, Okina could finally take no more, and collapsed. He had lost so much blood, his muscles were no longer responding, while Sakura stood above him, full strength, and without mercy. She said no final words to her father before cutting his head off with his own sword. And the Formless Mother was pleased. Okina was very rich sacrifice.
Now with Okina dead, and no army, Sakura had to figure out a new way to bring her formless god to power. Luckily, she learned a lot during her travels, and heard of a place called mt. gelmir, a volcano on the western coastline of The Lands Between. And Sakura had a plan. A plan to drain all the blood from Mohgwyn palace into the center of mt. gelmir, creating a bloodflame super volcano that could wipe out the erdtree, and Bring the formless mother to absolute power. And she was going to do it. There was no one in the lands between powerful enough to stop the legendary warrior that was Sakura...
Thats all that I have for now, if you made it this far I really hope you liked it. I wanted to mention her hatred for albinaurics, because of their fake blood, but I didn't want to add too much more. I can also share some character stats if anyone is interested! Farewell, fellow tarnished!