Kagoshima University conducts a poster session at the end of it's basic Japanese language training course. Each speaker makes his presentation 9 to 13 times to different listeners. The main features of this poster session are the repeated interactions on the same topic using a visual aid. No similar research has been discovered through a review of the literature. This study analyses how repeated speeches are actually made and changed by clarifying the presentation contents depending on the listener, how the presentation speed tends to become faster and how the interaction with a listener affects topic selection and explanation for the consecutive stage of presentation.