1. A scenario display method of displaying in a current scene, included as one of a plurality of sequential scenes of a scenario, information indicating relations between the current scene and scenes occurring before and after the current scene, comprising: storing relation information indicating relations between actors, resources and actions performed by the actors on the resources with respect to the plurality of scenes of the scenario; displaying information of a current scene including actors, resources and actions performed by the actors on the resources; retrieving information indicating relations between the resources of the current scene and actions performed on the resources of the current scene by actors in scenes occurring before and after the current scene; and displaying the retrieved information in the current scene.