In this chapter, we are introduced to a new character, who is introduced as "Piano La" . We learn that he is the protagonist of the story, and that he has been assigned the task of redeeming the skill of iron skin. He must choose one of the following options within ten minutes: iron skin, iron head, iron finger, iron neck, iron legs, or iron flexibility of rank a and above. He chooses iron skin because it will transform his body into iron, capable of standing heavy blows. He also chooses the defensive series because it allows him to reach rank d. He is glad that he asked for instructor's recommendation, because if he had chosen the balanced series, his flexibility would only be at rank cat best, while the offensive series would not even let him achieve rank d