I think he can defeat the overlord. After all, he had defeated a powerful overlord before as a hero when the odds of winning we're lower
ch 548 Capítulo 541: Orden Vs Caos
Anime & Comics · DE_LEON
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ch 368 Chapter 362
Anime & Comics · Keetarp
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ch 228 Chapter 228
Anime & Comics · blazuki
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ch 849 Hidden Passage
Games · MyLittleBrother
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ch 842 Promotion to Elite Demon Sealer
Games · MyLittleBrother
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ch 141 Baroque Works Saga: Alabasta Arc (Part 2: Alabasta War)
Anime & Comics · BlackStar_BH
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ch 818 Final Nail in the Coffin
Games · MyLittleBrother
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ch 74 POLL~!
My Power is Upgrading Everything (Rewrite)
Anime & Comics · Nine_Clouds