We have developed a new concept representation method named Manga Card Sort to achieve learning process model in Manga Case Method. We have experimented to confirm the effectiveness of Manga Card Sort with Manga Cases dealing with business and with two types of subjects who have different degrees of achievement in business. The result shows that Manga Card Sort makes learners examine their own concepts and modify them (learning process I). This result is not depenent on degree of achievement. It also shows that Manga Card Sort makes learners find contrarieties and improvements in others' concepts and point them out (learning process II), but only if learners' degree of achievement is low, or the number of discussion group members is two. We couldn't confirm the effectiveness to achieve learning process II when learners' degree of achievement is high or the number of discussion group members is over three.