I'm 35 year old woman who has lurked on the site since I was a teenager.
Hogyoku ex Machina Fanart:
Lizeth has a beautiful pencil sketch of Scary!Unohana from chapter 2 at:
too-cool-to-have-a-penname has an image of Spy-Zangetsu from chapter 12 at:
and Lil Mexican has Ichigo from chapter 17 at:
There is now also a TV Tropes Page:
That people care enough to analyze is... astounding.
YA190L has started a German translation,
And there's an audio version of the first couple of chapters (in English) on YouTube.
And now a TV Tropes page for Son of the Western Sea: