Into the Deep; Aphotic

A man named Nikolai Dreamwood lost his identity because of a
mysterious man did sorcery on him. This mysterious man is a wanderer who roams
around the continent which he looks for challengers in a game which this man
designed called the “Dice of Fate”. By entering this game the challenger will
lost his identity and most of the challengers forfeited this game by committing
suicide due to depression. As the story goes Nikolai will become a different
kind of entity which is a certain anomaly. As he ventures from place to place,
he will acquire different titles in which his actions as an individual will be
given merits. Due of being lost his identity he will label himself as Gustav
the Grave keeper and he will hunt this mysterious man across the continent in
order to bring justice to his fellow challengers. And the hunt begins.