The Child of the Sword God and the Demon God
There are two kinds of power in this world: fighting spirit and magic. Fighting spirit is used for swordsmanship, while magic is used for spells.
Swordsmanship turns the “fighting spirit” within the body into a tangible force, dramatically enhancing physical abilities and granting speed and strength beyond the imagination of ordinary people.
Magic manipulates the [magical power] within the body to unleash spells capable of large-scale destruction and immense damage.
Whichever power they possess, children inherit it from their parents. Children of the powerful are stronger, while the children of the weak are comparatively weaker. Moreover, the gifted gradually rise to the very heart of national power and become leaders of the continent.
Long ago, there was a kingdom that ruled over a certain continent. Everyone worked together to build a prosperous nation, and so an era of peace endured.
But before anyone knew it, the leaders of the two powers began arguing over who should rule the country, each insisting that their own strength was superior. In the end, the nation split into three.
The Kingdom of Guldoria, centered on swordsmanship. The Duchy of Orarial, centered on magic. And the Republic of Crunia, which embraced both.
At first, the three nations only traded insults, but their verbal clashes eventually became a war, and they have fought ever since.
Seriously, it's all internal monologues. Can't you just write properly? Where did all these internal monologues come from? It's like something out of a cartoon.