A epilogues purpose is to tell what eventually happens to the main charecters.
Epilogue means conclusion or like a p.s. to the story.
an epilogue is kinda like a little "bonus feature" for the end of a book. From what ive seen, you write from a third person perspective (unless you decide to stay in the voice of the characters) and...
Last chapter of HP7.
to say epilogue in Japanese is エピローグand it is read like epiroogu hope this helps :)