So-jin is tall and reed-thin, almost spectrally so, with short choppy blonde hair unevenly parted over her left eye. Her skin is alabaster-smooth with a faint, pearly translucence, almost lantern-lit in moonlight. Her black irises show little sclera, appearing like polished jet. Her hands are always meticulously clean, but her nails are stained emerald from years of herbal tinctures. Though she moves with elegant, almost predatory grace, when she thinks she's alone, she sometimes limps slightly on her left leg.