# When I Tried Strengthening a Rusty Sword, It Turned into an OP Magic Sword #015

Canonical: https://www.bookquiver.com/mizuki-manno/when-i-tried-strengthening-a-rusty-sword-it-turned-into-an-op-magic-sword-015

![When I Tried Strengthening a Rusty Sword, It Turned into an OP Magic Sword #015](https://quivercdn.com/covers/manga-up/mizuki-manno/when-i-tried-strengthening-a-rusty-sword-it-turned-into-an-op-magic-sword-015_979-88-9370-663-5.jpg?v=2026-05-31%2015%3A40%3A57)

- Authors: [Mizuki Manno](https://www.bookquiver.com/mizuki-manno), [YAEICHI](https://www.bookquiver.com/yaeichi), [Shunya Hasegawa](https://www.bookquiver.com/shunya-hasegawa), [Tera Akai](https://www.bookquiver.com/tera-akai)
- Language: en_US
- Published: 2024-08-02

## Description

Just because this boy was granted the weakest sword doesn't mean he can go back on his promise with his childhood friend in this fantasy manga! When everyone turns 12 years old, they are granted a Mystic...

## Editions

### When I Tried Strengthening a Rusty Sword, It Turned into an OP Magic Sword #015

- Publisher: manga_up
- Medium: ebook
- ISBN: 979-88-9370-663-5
- Published: 2024-08-02
- Language: en_US