Heat sugar, water and mint leaves in a pot until sugar melts completely. Then turn off heat and cover the pot to let mint flavors infuse in sugar syrup for 10 minutes. Remove wilted mint leaves and discard.
Blend sugar syrup, kiwi flesh, lemon juice, and ice in a blender for 1-2 minutes until smooth.
First pour kiwi slushy in a glass, add mint leaves.
Then slowly pour lemon soda. Add a fancy straw and serve.