So last night, as I was drifting to sleep, I had a dream that turned into a story idea. It was just at the beginning of me trying to sleep, but still a dream. So I did wake up, ending the dream but leaving me with a story idea. I lost some of the details once waking as per the usual, but it was coherent enough for me to keep the important parts.
But it being the time I needed to sleep, I had to risk it and just sleep.
So I forgot it overnight.
I did miraculously recover some of it, maybe most of it, although I inevitably lost some details somewhere along the line.
The basic idea I had was that a girl was brought to another world and granted powers there. The girl came from a not good place, and the people she was brought to are, genuinely, benign. They are not malevolent individuals masking as benevolent ones; they are genuinely kind, caring individuals who truly do mean best.
They defend against, and even hunt, some people believing it is for the protection of all. And she became one of their top agents at having done so. By this time, she had aged from a young girl to a young adult.
I don't remember the details of the group or how she landed among them (probably either accident/injury or her deliberately going on an undercover mission), but after some time spent among them, she has a change of heart. She realizes that the group she was previously a part of and their entire nation was wrong. Well-meaning, but wrong.
She spends time among them, learning among them, and eventually even becoming a teacher for their young (tho her transformation into a gigantic serpent monster as her first day was certainly not something that left a favorable impression--she is still naïve at that point, still being new to understanding why she is terrifying, being the cute clumsy girl that is learning and figuring things out).
At some point, she does return to her previous life, but now lives a double life among both (this is actually shown first with the above as flashbacks), but the details there when she's actually in her later 20s, I don't particularly remember. Something about her being suspected of what she is doing, with her friends not understanding why she would do so, why she would betray them.
I know her point of contact for those she hunted was one of the hunted's more skilled members, and that he recognized that she had no idea about the true nature of his kind. I know that there is a conversion process of some kind that she undergoes to be one of them while still appearing as her old self.
I remember some of the aesthetics; she wears a pink kimono at all times and has black hair, tho the length changes.
I remember that one of the guys involved has gray hair, fairly spikey but not quite to Goku lengths. And has small subtle fangs.
But I can't put it all together yet.
And since I have other focuses, sadly, I likely never will.
Writing it down so I don't forget again again.