The strongest Milesian Erin continent scourge

Introduction: A fan-oriented work derived from an old online game called Mabinogi, with elements of Celtic mythology as the background, recording the wars between demons and other races/the growth and encounters of the protagonist over ten years in reality, and the friends in the game They left one by one, went their separate ways, and finally embarked on a lonely road to becoming stronger. Later, due to the cheating strengthening equipment system, the protagonist's possessions were strengthened and exploded, so he finally gave up... but later played through other channels. I started the cracked version of Rocky, originally wanting to relive everything, but ended up encountering some unknown force and traveling into the game world. At this point, our protagonist has an abnormal system