Panda no Pom 

It's a sad and beautiful tale about Pom the panda, a little fellow who dressed as a panda and hands out balloons to children. Pom loves a human girl, Fuu. Poor Pom dies before confessing his love to Fuu. Pom becomes a ghost who waits for a long, long time on the bench where he got a date with Fuu, trying to find the right words to tell his beloved that he will never come back without making her sad.