Tokyo isn't a cruise port, but is served by the port of Yokohama. Combined, the cruise port of Yokohama serves as the port of embarkation for around sixty cruises every year from Princess, MSC, Royal Caribbean and more to Asia.
Overall sailings from Tokyo are rather expensive compared to other ports. Check out the illustration below for the average cost per day by month (Cruises only depart from Tokyo between February and November). Cruises leaving from Tokyo during the peak months of winter and spring are much more expensive than the the low season of fall.