BasementFlan said: Wait, Mima as a miko? What is this, I don't even
Guys
Guys, I think my brain just exploded.
Then gather up the bits so I can explode it again with a crazy theory.
I theorize that Mima was THE FIRST Hakurei miko (or the last one before Gensokyo was made) and killed herself with a knife because she fell in love in the human world and didn't want to leave. Which made her a vengeful spirit; vengeful against Gensokyo for almost taking her away. Which leaves one loose end...
The person she loved. Yuyuko Saigyouji. I think the two committed a love-suicide together under a sakura tree, and while Mima slit her throat, Yuyuko stabbed herself in the stomach. A stomach hole would turn her into a hungry ghost, and perhaps the suicide gave the sakura tree youkai-dom and created the Saigyou Ayakashi. Even if it stands against canon a little bit, that's my theory and I'm sticking to it.