The name Leonhardt Valerian was once known across the kingdom. A hero among adventurers, a warrior who led his party to the deepest dungeons, and a mentor who trained the next generation.

  But all legends must end.

  The final battle against the Demon King’s army had left scars—both seen and unseen. The weight of countless battles, the loss of comrades, and the burden of leading others had drained him. So, when the world no longer needed him, he walked away.

  He left his A-Rank party, refusing riches, titles, and fame. He disappeared into a quiet village, living as nothing more than a simple instructor, teaching young adventurers the basics of combat and survival.

  It was a peaceful life. No war, no betrayal, no impossible battles. Just the laughter of students, the rustling of leaves, and the scent of old books.

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  Yet, fate was not so kind.

  One evening, as the setting sun painted the sky in hues of crimson and gold, a group of familiar figures arrived at his doorstep. His former students—now rising stars in the adventuring world. Their eyes burned with determination, and their words shattered the quiet life he had built.

  “Master Leo, we need you.”

  They spoke of a dungeon—the Labyrinth of Eternis, the most dangerous dungeon ever discovered. A place where legends were born, where kings had fallen, and where secrets older than the kingdom itself lay hidden.

  “We can’t do this without you.”

  Leonhardt looked at their faces. He had trained them. He had taught them everything he knew. But the dungeon they sought to conquer… was one even he had never dared to face.

  He should refuse. He should turn them away. But deep inside, a part of him—the warrior, the mentor, the legend—stirred once more.

  Perhaps his story wasn’t over yet.

  And so, the legend who had faded into silence took his first step back into the abyss.