Sold only in convenience stores like 7-11 and Lawson, the compete set is kinda hard to find as most people are buying these for their morning caffeine jolts, and could give two hoots about the free figure attached to the top of the can.
My nephews were searching high and low for these everyday for the past few week for me and really hooked me up this time! The figs are highly detailed and made of a flexible rubber material.
Lots of neato can pics and other wacky Kinnikuman Coffee stuff at http://www.pokka.co..../090416_02.html