How old are you? You’re an adult, but your sister is taking care of you, and you’re worried about your mum finding out you’ve been on a date? What?
What is this? There is some information missing here to make it make sense. Are you part of a restrictive cult? Are you actually 15yo? There must be something else going on here!
Now the airport gets the opportunity to pay a civils contractor to rebuild the runway, thus raising the GDP of Japan. American economic development at its finest.