A controller includes an execution device and a non-transitory computer-readable storage medium. The storage medium stores playback content items. A playback content item refers to content in which multiple videos are switched and displayed on a display. The execution device acquires user information of a user in a vehicle. The execution device selects a specific content item from among the playback content items based on the acquired user information. The execution device plays the selected specific content item to display the videos.
