I've seen a gameplay of it and I know what the end is like. I have been playing it for hmm.. a day or two now and i'd really like to know if you can continue adventuring and playing around (even though you know who (i dont want to spoil it for anyone reading this) is gone). Thank youuu
Yes, there is a epilogue after the Main Story. After you finish the epilogue as well you can continue to explore dungeons and complete request and other objectives.
Source: I have the game and finished the main story and epilogue