How long would you have to train to become as strong as Tsukuna? Year 1, you swallow your first Tsukuna finger. Cursed energy explodes through your body. The King of Curses tries to take control. You resist. Your consciousness remains intact, but something monstrous awakens inside you. Year 3, you learn to channel Tsukuna's power without losing control. Your cursed energy becomes massive, overwhelming. Curses flee the moment they sense your presence.

You unlock the Dismantle technique. Invisible slashes carve through everything around you. Year 6, you ingest your 10th finger. Tsukuna now speaks in your mind constantly. He mocks you, provokes you, waits for the moment you let your guard down. Your body begins to mutate. Black markings spread across your skin. Year 10, 15 fingers. You master an incomplete domain expansion. Malevolent Shrine, a giant skeletal temple manifests.

Everything within a 200-meter radius is sliced apart simultaneously into thousands of pieces. Even buildings disintegrate. Year 15, you consume the 20th finger. Tsukuna takes full control. Four arms emerge. Two mouths open across your face. Your eyes turn red. You are no longer yourself. You have become the King of Curses incarnate. The day everything collapses, Tsukuna destroys half of Tokyo in minutes. Sorcerers attack you.

Malevolent Shrine erases them all. And you realize too late. You are never becoming as strong as Tsukuna. You are only giving him a body.