this is probably extremely obvious, but for the life of me, i just cannot find where you do all this tattooing business! could someone please inform me?

You go to Centropolis; it's called Subeta Ink. c:

Here

It's in Centropolis. C:

WHAAAT, I THOUGHT I LOOKED THERE. thank you two a bunch :P

HERE! :D

explore - centropolis - subeta ink :)