This is just an Idea I thought I would entertain, so have fun with it!
The pain was the first thing he noticed, the first thing to wake him. It was as if his head was being split in two and his mind couldn't tell which side to go with. His arm hung limply at his side as his gaze focused towards the man in front of him, he had a familiar face, but he couldn't quite place where he'd seen it before.
The second thing he noticed was his surroundings, it looked like he was in a swamp but...that couldn't be right. He was supposed to be back in the village, not out in the middle of some musky old swamp.
'...where am I?'
The third and final thing he noticed, was the information flooding into his head, all of those years he spent under someone else's control, and the rage started to boil in him, he spent the last three years of his life under the control of another, three years doing someone else's bidding.
Then the realization struck.
'I'm about to be killed…'
It was a grim realization, he would be killed for purging all of the bloodlines from his village, the people would feel completely justified about his death, no, the world would feel that his death was justified. Nobody would bat an eye, nobody would know the truth about why he was killing his own people, they just thought that he was a kage corrupted by the power he was given, that needed to be killed in order to restore the village to its former glory.
He couldn't let that happen.
Yagura took notice of his condition, one arm was useless, he wasn't thinking clearly, still working through the haze left behind by "His" genjutsu, he had obviously been fighting before he regained awareness. The man in front of him didn't seem any better off, he could probably kill him here and now and escape, but the thought disturbed him somehow. Why was he going to kill him? He didn't want any of his blood on his hands, he only wanted "Him" to die, not the man fighting for a better future for the village that he had sworn and failed to protect.
He had to leave, he had to leave now before anyone else came and decided that he had lived through his usefulness.
The man in front of him charged towards him, sword high and ready to kill. Yagura jumped back and pulled a mirror of water out of the ground with his staff, sending a copy of the man in front of him towards his attacker. He began to retreat. As the copy and the man collided with each other Yagura retreated into the swamp behind him and ran.
He vaguely thought about his village as he ran faster than he ever had before, of the village that he had sent into a civil war, of the women and children who would die and had died because of him, of the hatred they would see him with.
He set his face into a firm expression and continued towards his new life, a life that wouldn't be governed by a man in an orange mask.
Yagura Karatachi was now a missing-nin of Kirigakure.