Mr. Hikita, I Am Knocked Up [ヒキタさん! ご懐妊ですよ]

A couple are perfectly happy to not breed and procreate. Thus their life is a content and unselfish one. He writes and admires his wife. However, she informs him that she wants a child. They try and try, but alas are not successful. It is time to visit a physician to unlock the fertility riddle. Well, he is the culprit it seems