Brew the green tea and let it cool in the fridge or shake with ice to cool it down.
Dissolve the sugar in the water in the microwave or on the stove.
Heat a saucepan of water boil and cook the boba as directed on the package or until they are chewy and not to hard. Rinse under cool water and add to the syrup right away.
Stir the chilled tea, juice and milk together, add the boba in syrup and serve!