It all began with a leaflet.”Delivery Mama ‘Mother’ Business serviceHousework – Cleaning – ChildcareOn the behalf of those who are busy, we will fill for them in as your mothers.”It was a flyer for housekeeping business service, a new agency just started in this area.The normally apathetic protagonist held it in his hand, and called the number that was written on the leaflet.[Translated from Official Site]