Age issue aside, is the artist this flaky with their other stories? Almost every chapter, sometimes even several times within a single chapter, Miku's breasts are a different size. Maybe it's a challenge in drawing smaller breasts, I don't know, but on a regular basis, they are anywhere from cutting board flat, to tennis ball sized, to grapefruit sized. The art in general is good, I just hope the artist either learned to draw this properly, or gave up on the concept, because, at least to a detail oriented person, this is very distracting