If it is possible to be happy because of others suffering (Schadenfreude) is there a word for the opposite? To be happy at the success of others? "Segenfreude" seems possible, but I wonder if there is a more colloquial term expressing the same thing.
Not really exising (at least to my knowledge), but an acceptable word for the opposite of Schadenfreude would be
It supposes that the primary protagonist feels joy about whatever (say: success), and the secondary protagonist shares this feeling although not having been part of the initial action.