I Became the Troublemaker First Prince

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別題 I Became the First Prince: Legend of Sword's Song · 망나니 1왕자가 되었다 · I Became the Degenerate First Prince · I Became The Rogue First Prince · I Became the Rouge First Prince: Legend of Sword's Song

原作 Glumph, 맹송 · 作画 구샤 · 毎週水曜日更新

2026/07/21 更新

あらすじ

For hundreds of years, a great sword was reincarnated and lived in service to others, spending lifetime after lifetime cleaning up everyone else's messes. Then, unexpectedly, it finds itself inhabiting the body of a fifteen-year-old delinquent first prince. "I've raised how many people at this point?" The undefeated knight, the dragon slayer who brought down the great Gwangryong, the mercenary king — all of them were trained by this sword. Now, possessing the body of a wayward prince, the legendary sword Gruhon sets out to forge a whole new legend.