Remix versions of Satori's theme seems to be very badass, and also add some epic (and saintly (or dramatic)) atmosphere. This remix seems to be the best thing I found out there that conveys Satori's saintly heroic valor that I will show in the SPM spin-off.

The best title I could think of Satori in that spin-off is the "Rose-Colored Maiden of the Cross", since pink is her main theme color, as with green being her younger sister Koishi's theme color, and pink is called "rose" in the liturgical color list.

I also planning to redesign Satori to have her wear a cape (or mantle), and a different outfit that while still holding many aspects of her original outfit, it is an entirely different outfit that I designed. I also take Ralsei's outfit as an inspiration for Satori's outfit in this Touhou AU, while also taking inspirations from the outfits of other anime magical girl characters.

Also, I also planning to make the spin-off series focusing more on exploration like that of Yume Nikki (and its fangames) and with monster chases and bullet dodging like that of the original SPM, however it is not a YN fangame, but a Touhou fangame. Like there are also an overworld health system like that of the main SPM games, and once you get hit by a bullet in the overworld, you lose an amount of health, and if you lose all health, you get a "Game Over". But unlike Yume Nikki and the main SPM series, if you get caught by an enemy (chaser), you will also get a Game Over, instead of getting trapped in an inescapable area. I think it is somewhat like a survival game of some sort, where you have to explore the game's world, while keeping Satori alive as long as possible. And unlike Yume Nikki and its fangames, the spin-off of SPM that will feature Satori will have a more well-defined story, in the vein of the exciting adventures of Mari / Aya in the main SPM series. It will be also more dream-like in motif, as it will have the themes of "dreams".

Anyway, the track is so badass that I keep thinking that Satori will be a saintly heroic figure in my Touhou AU, regardless of her heroic acts are done in people's dreams.