hi,

i would buy a open-jaw ticket.
fly in to tokyo.

you can sent your baggage from tokyo to hilton osaka .

than i would take the NEX (narita express) and go to shinagawa and from shinagawa go to shiodome to the conrad tokyo. you can burn 40K for one award (its cat 6) its the best hotel in tokyo these days.

stay two days in tokyo. after that go to the hilton odawara. get a rental car and go to IZU & hakone beautiful places there. go to an onzen. try to go to mt. fuji, you can go 2km with the car .

take the shinkansen from odawara to nagoya. stopby in nagoya hilton. 1day .

go to osaka hilton (call or email mr. schwandter the gm in advance)

and fly back from osaka to your home country.

by a railpass, its 27800 yen for unlimited shinkansen and JR trains. you will save a lot if you do the trip as i suggested. you can already use the NeX with the railspass.

dp