you and Shadow

the infection started and if people are with white color on their skin then they are infected but you and your sister's shadow are with white skin but not infected but you could turn into a fox demon and your sister could turn into a tiger demon and your name is snow and you could turn into a normal animal too and your abilities when you turn into a demon animal is the same so it is spikes on your back poisonous teeth and venomous claws and poisonous Spike tail and you could glow in the dark but your sister doesn't