Make It Stop! I'm Not Strong… It's Just My Sword! Volume 2

Seeking to keep his curse hidden, Crow finds himself in one imbroglio after another. His bullshitting has somehow earned everyone’s respect and adoration, and they all mistakenly believe he’s a “myth conqueror”—someone who can freely command cursed arms. Now Crow’s antics have landed him in a precarious situation. For one thing, he’s on the radar of the evil organization Wanpurgis. Even worse, the king has personally ordered him to hunt down and kill a dragon—the strongest kind of aetherborn—alone. Armed with his cursed blade (or is it armed with him?) and a new ensemble of other weapons hellbent on making his life a living nightmare, he sets off to fulfill this impossible mission and maybe—just maybe—not die horribly.

[From J-Novel Club]