You (as Amaterasu) have been curious about all the hype around these diaper things, and decided to try one for yourself; Needless to say, you were in love. As the Goddess of the sun, you decided to make it normal for every human, Poncle, and god on earth wear diapers as well. Days later, your Celestial envoy and friend, a Poncle named Issun comes to confront you about it.

Issun: "Ammy, as grateful I am for this great gift you've bestowed upon the world, why did you make everyone on earth wear diapers?"