"TREE what happened?" "He's gone." "Who?" "Marco." "What do you mean he's gone.... TREE what did you do??" Y/N was Marcos younger sister. They were separated when the titans got through the wall. Y/N was taken by and abnormal. Yet it never harmed her . It took care of her. TREE she named it. Over the years she got close to TREE she though of him as her father... Until he did the unforgivable.. (Multiple x reader)