Congenital Insensitivity to Pain is a real neurological disorder. Sufferers can feel pressure but no pain. If they "ripped out a nipple ring", they would feel a tug but nothing more. They can feel emotional pain, however, like disappointment; heartbreak and loss. In the second story of this manga, this is dramatized by the uke ripping out his nipple ring and feeling nothing, then feeling the first pangs of love. Thus, for the first time, he "feels" something. Physically, he is still unable to feel the sensations of sex, but because he now feels love, sex is pleasurable. This emphasizes the idea that "sex is better when you love your partner". I believe this is true. I don't believe that sex requires love, but it is DEFINITELY better with it. "Sex and love are not equal, but sex WITH love has no equal."
Congenital Insensitivity to Pain is a real neurological disorder. Sufferers can feel pressure but no pain. If they "ripped out a nipple ring", they would feel a tug but nothing more. They can feel emotional pain, however, like disappointment; heartbreak and loss. In the second story of this manga, this is dramatized by the uke ripping out his nipple ring and feeling nothing, then feeling the first pangs of love. Thus, for the first time, he "feels" something. Physically, he is still unable to feel the sensations of sex, but because he now feels love, sex is pleasurable. This emphasizes the idea that "sex is better when you love your partner". I believe this is true. I don't believe that sex requires love, but it is DEFINITELY better with it. "Sex and love are not equal, but sex WITH love has no equal."