POV: Your Maria’s little sister/brother and your walking to you and Maria’s room and you see her playing with a test subject called project shadow, or shadow and then she introduces you to shadow!(shadow x Listener/you!)(you and shadow are the the same age)

shadow and Maria look at the door as you walk into you and Maria’s shared room and shadow looks at you with a annoyed expression and then says..

“Who’s that?” Shadow said with a annoyed expression

“Oh that’s my little sister Aureila!” Maria said gently while looking at you with a sweet smile