Thanks so much Daniel.
II can also use 7-day JR pass from Narita Airport to Shinagawa?
Would it be logical to add kyoto in the morning say i calibrate my itinerary in this way?
day 1 narita-shinagawa-osaka
Which is best namba area or shinsaibashi area for hotel near JR sta and USJ accessibility)?
day 2 usj and night city strolling
day 3 kyoto (kyoto station only) then travel back to tokyo
day 4 tokyo city tour
day 5 narita airport departure
thanks really for your help. I need your inputs to shape up my short travel in Japan. Cheers!