In this chapter, the teacher explains how he was able to achieve this feat in one night. He tells the boy that he will teach him some applications of magic once he has mastered the art of "condensing" his magic power. The boy is amazed that he has been able to accomplish such a feat in such a short period of time. He feels that he is becoming more handsome. The light elements in the boy's body have been "condensed" into a solid form. He tries to use more light elements, but it doesn't work. The teacher tells him that the ball of light in his body is the "aggregate" of his "magic power" and that it will help him in his study of magic