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Ruby felt like she was drowning in an endless sea of blood. All while chains chained her entire body to the bottom. No matter how hard she tried to swim to the surface, she was only able to take little breaths of air before being submerged again, desperately trying to grasp her life.
This wasn't a battle for life and death though, this was a representation of her own will fighting against the endless and indestructible will of her ancestor. It was the true representation of a hopeless struggle.
She would only last as long as she could muster the strength, before ultimately drowning into the blood and being taken over by him, her ancestor.
Her soul was already being eroded and corrupted, parasitized by his own, in the little time she spent encapsulated inside the bubble with the three Accessories, the three crystalized soul fragments have imbued their soul into her own, slowly due to the seal, yet steadily.
Check "The Protagnist's Sister Is Actually the Strongest"!