A wireless communication system includes a wireless device configured to make a request to join a wireless network in a case that a first estimated joining time is reached, the first estimated joining time being a time to join the wireless network. In addition, the wireless communication system includes a management device configured to cause the wireless device that made a joining request to join the wireless network, and cause the wireless device to leave the wireless network, the leave of the wireless device being caused in a case that a wireless communication by the wireless device via the wireless network is completed.