[…I'm part of the group I mentioned earlier that simply caters to their wielder's preferences.]
As Lostvayne said this, cosmic energy began to gather around the sword, forming a dark red veil that thickened into a swirling pillar stretching from the spot where the sword floated all the way down to the ground, obscuring its form completely.
Then, Lostvayne's voice echoed again, softer this time.
[Basically…]
As the words trailed off, the pillar of cosmic energy dissolved, and standing there in its place was a young man, roughly Arthur's height and build, with pale skin, short black hair, and crimson slit-pupil eyes. Silver highlights shimmered in his hair, and small silver piercings adorned both ears.
He pinched a lock of the silver in his hair between his fingers and said quietly,
[…It's your call…]
Then, Lostvayne turned on his heel, and another pillar of cosmic energy swirled into existence around him. When this new column faded a second later, the figure within changed.