enthusiasm usually reserved for pop stars or the japanese royal family. >> do you remember anyone ever getting this excited about a u.s. ambassador here in japan? "heck no" say the watanabes. caroline kennedy doesn't have diplomatic experience. >> that doesn't matter, emphatically, she can do the job. this is a country after all where blood lines trump all, why american nancy nichols who lives in japan says -- >> i think it's great. it's comes full circle. >> reporter: ambassador kennedy returned to her carriage to begin her path in u.s.-japan history. >> now, the ambassador did say she is looking forward to getting to work, as far as marking the significance of this