A computer-implemented information providing method includes: storing, at an information providing apparatus, a plurality of pieces of related information in association with a same identification information in a storage device, wherein each of the plurality of the pieces of the related information is representative of a content of a corresponding one of a series of a plurality of speech voices uttered to a first device; and in response to a request from a second device that receives the identification information, causing, at the information providing apparatus, a communication device to transmit to the second device one or more of the plurality of the pieces of the related information associated with the same identification information.