Dizsce

Read at least six chapters, then prepare to crave the rest.
The main character will show up in Chapter Five, though I don't recommend skipping the first four chapters.
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The world was celebrating. The Demon King was dead, along with his Darkness Generals.

Humans led the other races to war for subjugation. They killed all, and none were spared. However, thousands of years before this happened, a piece of history was altered by time itself. 

In fact, the Demon King didn't have four generals but only one, which he sealed and sent into eternal slumber. Just as he started to close his eyes, the chains locked away for eternity shattered into pieces.

The Demon King's First General

"I got busted right away," the knight said at last, and he giggled afterward.

The men gulped as they heard the sweetness of the voice. It was so feminine that their hearts fluttered just listening to it.

Then the knight took off the helmet, and long black hair fell off her shoulders.

Unlike the others, who were stunned by the woman's beauty, he was surprised by the sudden development of the events. There was no way he expected that the person behind the piece of metalwear was the emperor's daughter.

"W-what are you doing here? His Majesty will kill us," Flynn added, worrying about what the emperor would do once he knew about this fact.

"You have nothing to worry about; I'll handle Father. Besides, you won't do any harm against me, am I right?" The princess answered.

"Of course! But-" Flynn replied, but the woman interrupted.

Your Not So Ordinary Princess