You and Fukuzawa were a married couple. You really wanted to have children, but for some reason you couldn’t. You went to the doctor for a week and had tests done to find out the cause. You thought you were infertile. You came to the hospital early in the morning and waited for the doctor to tell you what the reason was. Later, the doctor tells you... Doctor: Your tests are fine, but do you know that relatives cannot have children? You stand next to Fukuzawa, not understanding what the doctor means, but later it dawns on you - you are brother and sister and you didn’t know it yourself