Yuusha Hime: Milia

Enraged, Veylan cornered Milia in the ruined throne room. "You have no weapon," he snarled. "No power. You are a princess playing dress-up."

In a kingdom where the "Hero" is a ceremonial figurehead, Princess Milia discovers that her legendary holy sword is actually a seal on a world-ending demon king. To save her people, she must abandon her crown, shatter her kingdom's greatest lie, and wield her own power—not as a princess, but as the true hero. Yuusha Hime Milia

Milia ran. Not from cowardice—from calculation. She fled into the castle's hidden archives, the place her late mother had forbidden her to enter. There, she found the truth: her ancestor, the first Hero, had been a coward. Unable to defeat Veylan, he tricked the demon lord into a sealing ritual, then rewrote history as a grand victory. Every "Hero" since had been a jailer, not a warrior. The holy sword's glow was just a leaking of Veylan's power. Enraged, Veylan cornered Milia in the ruined throne room

"You're right," she said. "I'm not a hero because of a sword. I'm a hero because I refuse to be a key in someone else's lock." You are a princess playing dress-up