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The fragments within Aruliel's body activated in a single second, each fragment began to enhance her body strength, and by infusing more dark energy into them, they showcased great amounts of new strength and capabilities! One of them was letting Aruliel's hands be covered in this black crystal-like material, forming enormous and sharp claws to slice through her foes! She used them to quickly generate new claws and within seconds, each claw was ridiculously big compared to her body size, but they were infused with great and large quantities of dark energies.
Check "The Protagnist's Sister Is Actually the Strongest"!