Hmm, my kiwi plant (also Issai) looks very different. The leaves are smooth, not hairy and the leave stems are red (see picture). Are you sure there was no labelling mistake at the nursery?
Hey there to me that looks like damage from spider mites, have you checked for those?
What kind of kiwi is this? It looks a lot different from both the hardy and the fuzzy ones that are sold in Germany.