Thunder Core (11)+ (This ability's level can be raised with Life Force.) Swordsmanship (18)+1 (A technique-based skill. Cannot be raised with Life Force.) Conqueror's Haki (6)+1 (A willpower-based ability. Cannot be raised with Life Force.) Armament Haki (17) (This ability's level can be raised with Life Force.) Observation Haki (1) (This ability's level can be raised with Life Force.) Hand-to-Hand Combat (9) (This ability's level can be raised with Life Force.) Speed (17) (This ability's level can be raised with Life Force.) Physical Strength (16) (This ability's level can be raised with Life Force.) Stored Life Force: 18.
Werther was delighted as he looked at his ability panel. Devouring Thundercloud Zeus had raised his Thunder Core by two levels—an unexpected windfall. Raising the Thunder Core cost Life Force measured in hundreds of thousands.
Previously, raising the Thunder Core from level eight to level nine had consumed nearly a hundred and fifty thousand of his stored Life Force.
Raising it two levels in succession would have cost at least five hundred thousand. The higher the Thunder Core's level, the more Life Force it took to raise it further.
Werther had a vague feeling that raising the Thunder Core from level eleven to twelve now would require at least three to five hundred thousand Life Force.
If he wanted to grow stronger, he had only two options. The first was to improve his Swordsmanship, but that depended on insights gained in battle or under special circumstances. Improving it through training alone was now all but impossible.
Werther was not lazy. Ever since arriving in the Pirate Pirate World, he had trained without pause so he could live more freely and to his heart's content.
But he had eventually discovered that repetitive training could no longer improve his Swordsmanship. Back then,