Persona-Conjoint method (PCM) is a new assessment method that put Persona Design Method and Conjoint Measurement used by development of products together. We suggested PCM as measurement of learning effects in a MANGA Case Method. It is pointed out that it promotes the changes of learners’ thought and their information structures to put case method and business gaming together. We supposed that the structural change of the management element shows a change of the recognition of the learner in the case learning. We measured the change using PCM. This article reports the results.