When you'd like something to drink with less caffeine, why don't you try Chai using Hojicha?

Hoji-Chai (2-3 servings)
8g Hojicha tea leaves
80ml water
220ml milk
Sugar to taste

Put water in a small saucepan and bring to a boil. Turn off the heat and place Hojicha tea leaves into it. Steep the tea leaves for 2-3 minutes. Add the milk and sugar in the pan, and heat over a low flame, taking care not to let the milk come to a boil. Pour tea into cups through a tea strainer.

If you don't have Hojicha at home, don't worry. You can make your own tea! 
You see,  http://japaneseteastory.blogspot.com/2011/02/what-would-you-parch-with-horoku.html