(and my interpretation of Ackerbond and Ackerman science)
Some of you won't agree with me, having Mikasa the most freedom especially knowing her relationship with Eren but I will explain why Mikasa's got the most freedom...
Bloodline-wise.
We already know Mikasa's half Ackerman, half East Sea Clan. Her having the Ackerman bloodline makes the audience knew that she's inbound of the Ackerbond (if proven) BUT if she did bounded by an Ackerbond, I doesn't mean she's fully be bounded to Eren.
My theory about the Ackerbond is basically an Ackerman (a half TITAN, half human) being bounded into a "king" which I don't really sure about it, because when I meant king, it's literally a person with Fritz bloodline/holder of the Founding Titan (and I'm having doubts about my own interpretation because most of the audience is 100% sure Levi's "king" is Erwin and we knew Erwin's not a founding titan founder-or I wished he was). Taking back into my definition of an Ackerbond is because Ackerman is biologically created by Titan science, so having a composition of a Titan in their body makes them bounded to the Founding Titan. Remember when Eren can control the Titans, especially the Pure ones, against the smiling titan, then I am using this evidence that the Ackerbond is the same thing as being controlled by a founding titan.
[But why the Fritz can't erase Ackerman's memories? My theory in here is, the titan bounded into Ackerman's bloodline is different, it's like the 10th Titan Shifter (more like the Ackerman's titan is the Phantom Titan). The ability of the Phanthom titan is their memories can't be erased. I think the Ackerman's titan experiments is the solution of the question, "What if a titan will be bounded into the person they shift?"]
In short, Ackerbond is basically being controlled by a Founding Titan holder.
So even she has the Ackerbond, she won't be fully controlled by Founding, because she is a half-East Sea Clan.
My theory why East Sea Clan's memories can't be erased by Founding Titan is because of they are of different ethnicity, basically immigrants in Paradis.
So what's my point?
Here's the thought: Mikasa is created by these 2 bloodlines that the Founding Titan can't erase their memories. Because even the Founding Titan can control their kind (the Ackermans), it doesn't mean they can erase their memories, and memories of their ancestors piled up into the next Ackerman, thus the reason they are persecuted. (I read in other post that reason Ackermans has an incredible power is because the strength of their ancestors are piled up into the new generation Ackermans)
Even being bounded by Ackerbond, she do have a freedom of choice because she can defy it by the powers of her heritage. And even having an Ackerman bloodline, doesn't mean she's doesn't have freedom.
