Yeah-ish.
Yeah, Mikasa's crush on Eren is very obvious. Too the point where it actually annoys me. All she thinks about is Eren. Which I understand but I don't like girls that are obsessed. But my peeves aren't what's important. Eren has stated over and over how much Mikasa annoys him. Sure, he cares about her and will protect her no matter what... but he always treats her like his sister. He is always standing up to her, saying stuff like "You're not the boss of me" "I'm not your baby brother!" and blah blah blah. In a way, he treats Mikasa the way he used to treat his mom (whom he loved very much but would constantly argue with her). I just don't see the chemistry on Eren's part, and so far he hasn't developed attraction to her in the slightest, he still treats her like he always has. In other anime (or stories in general), when people are going to be together or gain feelings for one another... it doesn't just happen at the end. It is foreshadowed or developed over time. Eren has gone through some character development such as to learn to trust others, training and skill are just as important as courage, and other stuff. However, his character arc has never once been focused on what he feels for Mikasa. If the two are gonna get together, I'd prefer it won't be a last minute thing where right at the end, Eren is like "Mikasa I just realized that I am in love with you!" or "Mikasa, I always loved you just could never admit it to myself!".