SI tries to get the Senshi against Chibi-Usa/Reni

[slickrcbd]

I'm looking for a fic I read a long time ago where an SI or someone with knowledge of the series "Sailor Moon" winds up in the Sailor Moon universe and allied with the Senshi.
When Chibi-Usa/Reni shows up, he claims she's an evil spore that claims to be from the future out to steal the Ginzuishou/Imperial Silver Crystal and is not really a child but actually over 900 years old. Also fond of mind control, which explains what happened to Usagi/Serena's parents.

The only thing I can find is Carrotglace's "Insertion" which has them going "THE SPORE! IT DIES!" and attacking Ranma 1/2 style while insisting "The spore is evil and MUST DIE!" before things are resolved Ranma 1/2 style. Which sorta fits with the story given that a bunch of additional personalities are inserted into Ranma Saotome's head in "Insertion", but is NOT the story I was looking for.