Soooooo......

[Ghoulish Delight]

Kai Kai and Ki Ki are the names of those 2 characters, the creation of which (as well as the characters on their ears identifying them) pre-dated the creation of the foundation. So it may not be an explicit plug for the foundation, at least not any more than any Murakami art is (the blurring of the line between art, commercialism, and promotion is a large theme in his work, so much of what he does is by nature explicit promotion). But then, I suppose the foundation's sustainability goals are somewhat relevant to the interests of people interested in the solstice so perhaps it was meant to be a direct tie in.