I wonder if someday we'll get to see her nipples or even something more, Japanese e-thots are pros at the art of blueballing and non-nude teasing until they find themselves in the middle a major scandal and start to sell nudes.
It's funny to think that we got to see Canan's nipples, someone who works for a major virtual idol company and Sato's Co-worker, before Macoto's nipples.