Lonely King With Cheat Abilities

Den was your ordinary boy, a little introverted but he was happy with all he had. But being betrayed by his love and best friend, also his sister and schoolmates made him suffer. Someday, the game of entities, the beings with unlimited power, suddenly fell upon their world. Den was chosen to be the successor the Fallen Queen, the enemy of the entities , will he become OP? This is the story of a tragic boy became the OP Chaos Rank Hunter with various abilities.