AOT Eren's Titan shifting twin sister

1: This will be a Levi x Oc story
2: the main character is Eren's Twin sister, her name is Rin
3: She is called emotionless bye other people obviously being emotionless is impossible and cringe in most fan fictions 😬, she is just rather cold but still does feel human emotions just like any normal person. she just chooses to ignore them or bottle them up.
4: this isn't very good for your mental health and in the story she developes a
@dd!ct!on to S3lf h@rm
5: this is where Levi and Rin's relationship kinda kick starts, u can read for more information on that.
6: Rin has Long knee length brown hair and sea green and grey eyes, she has central heterocromia (look it up)
8: She was given her Titan form when Eren got his She is known as the winged Titan because of the giant black wings on her back. She can also control titans (Like imagine how cool a flying Titan😍 btw I am not like hange😆.)
9: Rin is literally 'the perfect soldier' she takes any order given to her bye anyone as long as she knows them or they are a higher up, Rin is super strong and loves to work out. She takes pride in protecting the people she loves. Rin is good at using odm gear, hand to hand combat and loves a good sparing match. Her stamina is extremely impressive. She is calm and collected, intelligence and only speaks when Necessary. with all of these good qualities what regiment wouldn't want her, she is basically a Titan killing machine. Read more to find out what happens in Rin's life and her read as her love blooms with captain Levi Ackerman, who btw is aged down😭 ->