"Sex, huh... Is it really that enjoyable, I wonder?" My wife, Saa-chan, is a die-hard rationalist. For her, sex is "for making babies" and nothing more, nothing less. Because of this, she would only ever allow us to have very plain sex. Four years into our marriage, with work settled and plenty of savings, we finally started our plan to have a baby. At first, it was just a businesslike effort to conceive, but gradually, Saa-chan began to understand the true pleasure of sex...