When I Tried Strengthening a Rusty Sword, It Turned into an OP Magic Sword

[Sabitsuita Ken] wo Tameshi ni Kyoukashite Mitara, Tondemonai Maken ni Bakemashita · 【さびついた剣】を試しに強化してみたら、とんでもない魔剣に化けました

Manga · 2021 · releasing

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By Mizuki Manno, Yaeichi

ActionAdventureFantasy

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Synopsis

When everyone turns 12 years old, they are granted a Mystic Arms by God. The hero-admiring Rust dreams that he'll get a powerful one of his own one day.

As his fellow villagers began receiving high rank Mystic Arms one after another, Rust nervously prayed to God. Then, before him appeared a Mystic Arms of the lowest rank, a Rusty Sword.

A tale of becoming "zeros to heroes" with the weakest boy and the lowliest weapon!