Thor System

Ainilu, who had been reborn as a Thunder Fruit user in the Pirate World, had a Thunder God System in his brain that he claimed was left behind by Zeus, the King of Pantheon.

[Thunder Blast Cultivation: LV1, EXP 0/100]

[Bodywork Cultivation: LV1, EXP 0/100]

[Domineering Cultivation: LV1, EXP 0/100]

Other than that, there’s even a skill tree. Are you sure you didn’t pirate some turn-based online game?