Untranslatable pun in the title makes life even harder than my poor translation skills already does. Please someone check everything I wrote, I insist.
I think you did a good job with the title, all things considered. The dialogue needed a little polishing here and there (mostly for commas of direct address), but that was it.
GestalTzouHoulA pun mixing Touhou with Gestaltzerfall, a phenomenon where it becomes more difficult to recognize a Kanji after looking at it for a while.