This research is the preliminary study for development of narrative contents for improving reading skills and behavior controlling capabilities of children with ADHD. Microsoft's Kinect, a non-contact motion sensing device, and NeuroSky's MindWave, a BCI device, are connected to Unity 3D engine to capture user's motion and brainwaves, respectively. The given narrative contents interactively respond to children with ADHD while they are reading the contents and performing the given tasks presented in the behavior training game system. This study examines whether the contents are suitable for the first and second grader children. For this, The interaction with the contents is first observed by five adults and two children. Then the system is tested by three ordinary first graders. During the experiments, the children easily figure out the given texts and do what the game contents drive for the player to react. All three kids concentrate on the reading contents without leaving their seats for average 37 minutes. This experiment shows that the contents are properly designed for the first and second graders in terms of reading speed, reading completion time, complexity level, and task performance. Based on this experimental study, the interactive narrative contents will be used to conduct full-scale experiments with children with ADHD.