According to @tknukvich, the reason why otaku might look at women’s breasts has little to do with them being perverted, and more to do with the fact that they’re so timid they find it difficult to look women in the eye.
There are many preconceived notions about otaku in Japan, which usually focus on their tendency to fall in love with 2-D idols or their obsession with anime and women’s breasts.
“Just because anime women tend to have large bosoms doesn’t mean I’ll stare at women’s chests in the real world.”
“Maybe otaku are really trying to see through women’s chests and into their hearts to understand what they’re saying.”