This has nothing to do with naruto except for the fact that it's about an ambu.
I would tell you how I came up with this but you probably wouldn't beleive me...
Tsukune…
I was ordered to protect her. Ordered not to bond with her. But how could I not? She was the last of her clan, the rest kill by a horrorific monster, ordered to kill them all…
Tsukune…
One morning I woke up and she was gone. Hours I search, only to find here in the grasps of the monster who's soul being was to kill her…
Tsukune…
The monsters claws slowly encircled her neck as she stared at me helplessly, terrified…
Tsukune…
" I WAS ORDERED TO PROTECT THAT GIRL! AND THAT'S WHAT I INTEND TO DO!!!!" I jumped at the monster, only to be knocked away…
Tsukune…
"It seems you've failed the mission." The vile beast said, "Now watch as I gorge on the flesh of the last survivor of the dukon clan!" The girl screamed.
"TSUKUNE!!!!!!"
Blood splattered across my face and outstretched hand. Tsukun was dead. And it was all my fault. If only I hadn't let my emotions get the best of me, like a TRUE ambu would. She might still be alive.
Tsukune…
Now I walk the earth, unable to die. Burdened by the death of one of the many innocent death that happen among the world. Every day I wish that the memory would go away…
Tsukune…
Now, nearly six hundred years later, after losing my memories, this one memory has come back to haunt me, for the rest of my immortal life. The memory of the one little girl, who couldn't be saved.
Tsukune…