I would definitely take it as a gift. (I’m always trying to think of good gifts for Japanese friends but I’ve never thought of that...) You might include information with various ways to use it, too, as I think most Japanese just think of it for pancakes. @Dragonflyer
has some great suggestions. (Hot milk or tea ...that sounds good!) It is also great on roasted vegetables, it’s good mixed into plain yogurt, and I have a friend who likes it in oatmeal. It is delicious blended or whipped into softened butter and then put on toast... and if the people you are giving it to have an oven (many Japanese don’t...), it is fantastic in baked goods. I would say, give the syrup and the suggestions, too.