You know, to the point and degree where they have to be completely censored out? Well, not even the breast itself, just the nipple. See, I started watching a few anime series like Sekirei and Manyuu Hikenchou, and I began to wonder... what's the big deal? See, when I began to analyze things, it turns out like this -
Men's chest is considered normal. Why? Because it isn't used as a sexual product in marketing, although clearly we all know a hot body on a man a female is attracted to.
Why are women's breasts so coveted? Thinking through the eyes of an intelligent human being, it has to do with how they are portrayed.
*Fact* If women's breasts weren't used as sexual products, and so highly kept censored, wouldn't the general public begin to see them as just another.... "eh, show us something new". That's probably the most rational thought one can put into deducing this question. Just like men's chest aren't censored, neither should the female breast. *disregarding the fact that some men have larger breasts than women, and in Africa there have been cases where even men began lactating in order to feed their young when their mother died* . Just the simple fact that they are highly censored to the general public and used in a sexual manner, that's what drives men to covet them so highly. It's that censorship that promotes sexual urges and drives. What's more coveted than something kept in secret? A lost treasure. A female breast. Both unknown. Both highly coveted. Both kept under wraps.
It's really adding 2+2 together. When logic surpasses personal ignorance, or rather personal insecurity (the mentality most women have about their breasts only proves insecurity), the world can truly be equal. In Europe, the mentality is much more... well, open and free - if that makes any sense. No one is insecure about their bodies. They got what they have, and they enjoy it. And it's because of that free and open thinking that allows even men to be comfortable around topless women. Not only are they showing confidence, but it's just something so normal. You see it every day, and it becomes... normal. Like a man's chest here in America. It is just seen as normal.
Places like America and Japan, you can see how childish their mentality is when it comes to sex. There are reasons why women(and even men) go to topless support rallies demanding equality. Anime has a huge over-sexualization of the female breast because of the childish mentality that the Japanese have. Here in America it is the same thing.
I ask a simple question to you all... why? Why are breasts considered sexual? My answer? Insecurity and censorship. Or really, just childish mentality.