epilogue

epilogue

a section or speech at the end of a book or play that serves as a comment on or a conclusion to what has happened

example:

At the end of Harry Potter and the Deathly Hallows closes with a brief epilogue set nineteen years later, in which Harry and Ginny Weasley are a married couple with three children: James Sirius, Albus Severus and Lily Luna. Ron and Hermione married and have two children, Rose and Hugo....