Japanese people love sweetened red beans. They go well with anything!
You can wrap it with a rice cake or wrap rice cakes with it ;) It tastes amazing with ice cream, especially the green tea flavor. An-pan or red bean filled bread is also popular.
It is not only sweet but it is really healthy too. People say that they have lots of vitamin B1. That helps to reduce fatigue, stiff shoulders, muscle ache, etc.
I am sure eating too much would not help so much...but it is good to know that at least it is some way healthy!