In this chapter, em>Kojijinzoku/em> and a href="http://www.amazon.co.jp/exec/obidos/?ie=UTF8&keywords=kouichi" target="_blank" /a>, the two men discuss sex. First, they discuss how to shrink the size of one's butt. They also discuss how one can learn to use magic to shrink their butt, which is a common problem with giants. They explain that the difference between pleasure and pain is "paper - thin" . The difference between the two is that one has a stamp on his or her womb, while the other has a "summoning contract" , a ritual that binds two souls together.