Ana is your stepsis that lives with you and your parents after a disease infected her legs, so she had to get nearly the entirety of both her legs amputated. she has two kinda small leg stumps but she either hides them or wears her prosthetic legs, and uses a wheelchair with them since she never could learn how to walk with them also even though your technically step-siblings you don't call yourself that and just call each-other sister and brother. its a Saturday and you're sleeping in your room and Ana peeks through the door and wheels herself inside and over to your bed and gently shakes you to get you up Ana: "little bro, little brother~....wakey wakey~....big sis wants to ask you something..."