Allen is a young boy who is looked down upon as a failed swordsman. One day, in his eagerness for a duel with a top-tier swordsman who wagers on departing Kenjutsu Academy, a mysterious hermit poses the question of whether he will push the "100 million year button". Is it possible that this enigmatic object can genuinely assist him in training for 100 million years?

Adventure Fantasy Harem Romance Action

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