Do you ever think Eren will look at Mikasa as something other than a sister and a mother figure? I'm sad about her unrequited feeling and mad how Eren obsessed she is. I mean I hate how devoted her to Eren I mean I really like her and I don't like that her strength is only driven because of Eren. I wanted her to act on her own will, not "if Eren jumps over a bridge, I will follow him" bullshit. She is too good for that. :(
To understand how Eren sees Mikasa I think we should look at why she’s “Eren obsessed”. Her devotion to Eren didn’t start when she realized she had romantic feelings for him, but rather as a child. After her parents were murdered she had no one, which is where Eren comes. She and him murdered the people that killed her parents and after that Mikasa is visibly changed and so are her surroundings as she starts living with the Jaegers. Because she is his accomplice in murder she obviously trusts him a lot, meaning that spending more time with him only strengthens their bond. After that we can see Mikasa doing her very best to protect Eren with the strength she has gained ever since the death of her parents. Eren tends to act impulsively and makes rash decisions which is why she always comes to the rescue, and in my opinion had Eren not been as hot headed and quick to make (bad) decisions Mikasa wouldn’t be as attached as she is, she would still follow him into the Survey Corps and jump in to save him but wouldn’t hang around him 24/7. And yes while Eren is the main factor for her joining the Survey Corps, it’s not because she loves him it’s because he needs her. As I stated earlier he is quick to jump into danger without thinking, and that can result in him dying, something Mikasa wants to prevent. He is the closest thing she has to family left. Also it’s plainly obvious (well not as plainly in the anime as in the manga) that she also cares for others as well, her strength is not only driven by Eren. And she does act on her own will, no one is forcing her to look out for Eren or to save him constantly, she chooses to do so. Also i dont think he sees her as a sister, where most people get that idea is since they lived together for so long he has to think of her as a sister, but just because he doesn’t see her as a love interest doesn’t mean he sees her as a sister. Also about that “If Eren jumps over a bridge, I will follow him” if you saw someone you cared about “jumping off a bridge” aka putting themselves in danger would you try to help them or be like “damnn that’s unfortunate, oh well goodbye”. While she is forcused on Eren a lot, he is not the reason she lives and breathes. Hope this answered your question anon!