Mythical Beast Amber

Kashimo's technique can only be used once. Ever. One activation in his entire existence. When he triggers it, his body becomes living lightning, not a metaphor, not cursed energy shaped like electricity, but actual electromagnetic energy given human form. Every contact electrocutes. Every movement generates current. His attacks carry voltage that would stop a human heart.

Kashimo deliberately fought through the entire Culling Game without using it, saving it for the one opponent he considered worthy. He didn't want to waste his single shot on anyone who wasn't the strongest.

Kashimo waited centuries for SukunaSukunaSpecial Grade · HumanThe King of Curses. A thousand years ago, Sukuna was a jujutsu sorcerer so powerful that other sorcerers of the golden age couldn't defeat him even working together. His cursed tec..., and when the moment came, he transformed. The lightning body was genuinely impressive, attacks at the speed of electrical discharge, constant ambient voltage that made close combat dangerous, and electromagnetic effects that disrupted cursed energy control.

SukunaSukunaSpecial Grade · HumanThe King of Curses. A thousand years ago, Sukuna was a jujutsu sorcerer so powerful that other sorcerers of the golden age couldn't defeat him even working together. His cursed tec... countered. Because SukunaSukunaSpecial Grade · HumanThe King of Curses. A thousand years ago, Sukuna was a jujutsu sorcerer so powerful that other sorcerers of the golden age couldn't defeat him even working together. His cursed tec... counters everything. But Kashimo's single-use technique did what it was designed to do: it hurt the King of Curses. Not enough to win, but enough to matter. Kashimo died having used the technique he'd saved his whole life for on the only opponent who deserved it. Whether that's tragic or triumphant depends on how you look at it.