Ok so your scavenger hunt has led me to a YouTube video of yours regarding an extra stage on Touhou.
I take it I am not at all on the right path?
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FULL SPOILERS FOR THE ENTIRE PROCESS
that is the path from my YT video of me clearing the game.
there is another one that involves the "more information" section of this page.
the YT video one leads to the description of my 6th video, and the 'more information' one leads to one of my games called "fractured memories".
both of those get you a string of characters, which are the end of a google drive folder link.
this folder has a single black png, if you brighten it, reveals "the date of its creation shall set it free" in wingdings.