Dimensional Codex System: I'm Really Not a Cultist!

When Fang Zheng opened his eyes, he was surprised to discover he had been reborn in a fantasy world of magic, dragons, knights and princesses. Not only that, the game system Fang Zheng had developed in his previous life had followed him into this world. It would seem the next logical step should be traveling across boundless plains, gaining limitless power, the path of a brave hero, defeating the demon lord, marrying the princess and reaching the very summit of life... Wait, wait... So why, before all that, was he suddenly reborn as a guy whom absolutely everyone brands a cultist?!