Perfect Assassin

The story follows a high-tier Warrior with primordial lightning mana who aspires to be an Assassin due to his simple-minded logic: Assassins need speed → Lightning is the fastest element → Therefore, I am the ultimate assassin. The catch? His execution always generates a deafening thunderclap and explosive aftermath. However, he remains oblivious due to his "Theory of the Speed of Sound" (he believes the thunder stays behind him, meaning the target dies in absolute silence before the noise actually arrives at the scene).