The Ending of Jojo in the Stars

This is the end of "Jojo in the Stars" was when Jojo caressed Hero on a Head 
because she wanted to take care of Hero 

when he was injured, still alive and disfigured to 
reunited Lovers embrace through the Bars. 

Hero and Jojo were in the Stars again. 
I wonder if it's a sad Ending or a bittersweet Ending.