Story idea:
An immortal mutant work in cemetery. He has been working as Undertaker for so long from a when the town very small to buzzling city. His hobby is to know and write down the story of the dead. To see what life they lived, what achievement were achieved.
His cemetery business is always slow but those story never make him bored, beside he like it slow, that mean people life to the fullest.
Because he immortal he has almost no friend, except the priest who work with him. The priest are descendant of his friend and been like family mission to take care of the immortal man.