Ooooh, he's diff --
the what shrine now?
...yeah, I think we'll need explanations on this guy before we start working with the story. >.>
Hoi, yeah. It's a long story.
It was something somebody wrote a while ago, called Eternal Twilight, where Marisa became the inadvertant owner of the run down shrine against her will.
It started a few years prior, where Nageki was trapped in the shrine, the original family long since gone, leaving the spirit of the shrine behind, and the guard Tori to make sure it doesn't get defiled.
Uzuchi, hatches a long winded plot to distract people from the obvious incident that her Master was starting, and uses Nageki's shadow to cause a fake incident.
Nageki's Shadow, Godama has the inherent ability to destroy and create memories, and tricks several people into believing something that is untrue under the guidance of Uzuchi.
Godama tricks everyone involved except for Kiki, who has no real bearing on the plot. Ever. He uses this fact to make people believe that Marisa's bloodline traces all the way back to the original owners of the run down shrine, even though it is mostly untrue.
When the incident is resolved and Marisa defeats Nageki, he recognizes her as someone worth governing the shrine, and against her will, it technically becomes hers, even though she has little connection with it at all. Personally, it's just easier to call it the Kirisame Shrine, than the old run down shrine of forgotten gensokyo. Don't you think?