The Gensokyo Hat Heist

A pale blue spirit has been pushed around the plains of Gensokyo since it's beginning.
Completely unnoticed by even those spiritually inclined, and without the strength to move, it was completely helpless.
Until it heard a mysterious voice, stating that it had gained the ability to join the living.
With it's new power, it steals the form of the ordinary witch, Marisa Kirisame.
However, a small timer begins to tick down, it has 72 hours to procure another form, or it's back to being a spirit.
Things get even stranger when they find out about their shared history with Hieda no Akyuu.
How long can the spirit survive this way?
How long can it evade the people who care for it's forms?

- Disclaimers -
Cover art is not mine, and belongs to Touhou Lost Word: https://gamepress.gg/lostword/story-card/sanzu-river
Touhou Project and it's characters belong to Team Shanghai Alice. I do not, nor do I claim to own Touhou Project.
This story contains scenes of extreme violence, as well as scenes that some people might find disturbing.
Please take the mature warning seriously.