This Kit Kat was launched to support Asian Soccer and is sponsored by the JFA. On the back of the box it explains about how playing soccer makes kids bright and healthy and gives them dreams to aim for.
That explains why the flavour is Sports Drink, though exactly which sports drink we don't know. The back of the packet states that there is lemon powder and vitamin c contained in the chocolate.
The smell of this Kit Kat reminds me of rare cheesecake. It has a lemon-cheese scent.
When I bit into the Kit Kat I could taste the lemon immediately. There was a light lemon taste in the white chocolate, and bursts of sour lemon in the cream between the wafers. There seems to be a bitter taste at the base of my throat after eating this Kit Kat leading me to suspect there was grapefruit flavour in there, though I can't find it on the ingredient list, so maybe some chemical bitterness perhaps.
In all, I liked this Kit Kat, but not happy with the aftertaste. I probably wouldn't eat it again based solely on that. I don't think it's anything very special at least, and doesn't even remind me of a sports drink to be honest.