I want to go on a Japan mission trip?

i dont know if my parents will allow me to go because they still think im young to go to japan by myself (im 16) but of course id be stayogn with other missionaries and the only thing i would be doing alone would be the flight there and back, but its expensive also, which is a big issue too! and leaving school for a month? i dont want to wait till next summer! and how safe is it! im a mexican city kid from chicago. still dont knwo if thsi is what God wants for me?