VRMMORPG: I Can Use All Job Class

What would you do if you can use all job classes in a Virtual Reality RPG game? It would be a great experience yes? Our MC Roan has his families that were both training him with their arts and he successfully inherited them. His mother's side was a family of samurai and ninjas while his father's side was a family of martial artists. He was an athlete in their school and he used all his learnings inside the game. Roan was a player of the Virtual Reality RPG Land of the Eternal Night. In this game, the story was about a world, Arcadia, that was enveloped in darkness after Demon gods arrived in this world. Adding the brooding and dark mood as he played the game. He was a versatile gamer that was a god-rank player in the past. But! Roan was stuck in the world of his favorite game after his headgear has short-circuited. Sending his soul to the game. Though the game became reality and there were no players anymore. Being sent to the start of the storyline and the only way to return home was to defeat the game. With the help of the Game System, he received a bug that gives one job class after another. Or so he thought it was a bug but was not! Harnessing them all became reality! With the past experience of using each job class in his past with each run-through, he was granted to use all job classes! Witness a merciless MC that slaughters enemies. Kingdom-building was well thought out and has quality. RPG game that was also unmerciful to players. Evils have already won but hope was still not vanquished. Adventure at its finest and lore with depth. A gruesome fate for the inhabitants and bringing hope to humanity. Let the game begin!