If the Hashiras survived the final battle

As the final battle ended the kakushi were able to treat the wounded more quickly and save more lives, as now no demons exist anymore (except for yushiro) what should the survivors do? Go do another job? Stay in the corps?

This story is not canon, it's just a what if scenario!

I do not own the characters, pictures or anime

If you haven't finished Demon Slayer I advise you to watch/read the rest before continuing.

Check the tags for ships and other stuff, if something from them makes you feel uncomfortable you can leave the story, I'm not going to force you to read it.