Y/N is eren jaeger sister, she joined alongside her brother to the survey corps while there she meet Jean kerstien. Her and Jean do not get along since the beginning always hating on each other and bickering, after they graduated their training she was surprised he joined the survey corps along side them. She’d always assumed Jean was interested in mikasa until one expedition she gets seriously injured almost dying and Jean shows concern, fear of loosing her that’s when he realizes he’s loves YN