A method for visualization of a communication path includes: executing, by a processor of the node apparatus, a wireless communication processing that includes receiving a first frame transmitted wirelessly from a first node apparatus or a terminal apparatus, the first frame including first time information indicating a timing to cause the light emitting device to emit light, and performing at least either one of processing to utilize the path information to transmit the received first frame to a second node apparatus according to the path information and processing to terminate the received first frame according to the path information; executing, by the processor of the node apparatus, an application processing that includes causing the light emitting device to emit light, based on the first time information included in the first frame.