The 10th Titan Shifter (Attack on Titan Yuri story)

There will be yuri in this with a female reader so if you don't like don't read.
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You are secretly the tenth titan shifter you were there while Wall Maria was broken by the colossal titan and armored titan,you were on the same boat as Eren Jeager as he said he wanted to kill all titans just from that speech from him he gave you the courage to try and in list yourself for training.

5 years after the fall of Wall Maria you are in training to become a strong soldier to revenge the innocent peoples lives on the day that Wall Maria fell,while fighting for Trost district you saved a cadet from a titan but in the process a building came crashing down you.

You blacked out from the pain but something special saved you what was it?