PROBLEM TO BE SOLVED: To provide a desirable childcare environment to a mother having a child who still needs to wear a disposable diaper.SOLUTION: This system comprises a disposable diaper 100 and a portable communication terminal 1. The disposable diaper 100 is provided with a predetermined image 110, and the portable communication terminal 1 comprises an imaging unit 13 and a display unit 15 which, when the predetermined image 110 is recognized within an entire image 20 captured by the imaging unit 13, outputs at least one of an image 21, a character 22, and a voice associated with the predetermined image 110, with the entire image 20.