A Happy Sad Ending

There are I think happy sad endings. In this term happy sad ending, what I want to say is the ending looks like a sad ending on surface, but also can be interpreted as a happy ending in some way. For examples, there are and .
At the ending of , the little prince seems to be dead and the two main characters say good-bye to each other. It looks like a sad ending (actually it is sad) but they are happy for themselves because they learned their precious lessons and became friends with each other. Also at the ending of , it is definitely a tragedy that the prince and the swallow died miserably, but the god brought them to the haven and they live happily in heaven and also they helped many people and each other by sacrificing themselves. SO that’s a happy sad ending.