If my memory serves me right, the future Sanae loves rotten issues! The actual word used is ishuu: strange/offensive smell. It sounds a bit similar to the English word issue>

"Issue" is a foreign word which means "to publish"! Or a publication. Or an incident. Or...

Oh, I'm not just going to ferment (rot)... Hakkou = ferment

But I'm also going to publish (a work), is that so!? Hakkou = publish

On that day, a shrine maiden who loves rotten issues was born in Gensokyo.