So. Miyao's dad, Toujirou Mitake, is a notorious "international journalistic freelancer," which is technically his job but is really more of his side hustle since he makes most of his money by being a spy for hire. As a single father, he is in the country maybe 10% of the time and he gets to spend very little time with Miyao, but he loves his LOVELY DARLING SON LOOK AT HIM ISN'T HE ADORABLE very dearly... so is it possible that he offered his services to the Hotsuins at a discount in exchange for them taking care of Miyao while Toujirou is out gallavanting,