Execution by Kiss

This ability of Fūka allowed her to absorb all of an opponent's chakra and techniques by kissing them, allowing her to possess multiple elemental affinities, as well as enforcing the ones she already has and gaining access to all of her victim's elemental techniques. After she was done absorbing their chakra, she could steal their soul. This technique could also be used to determine what elemental affinities has the target by licking them. When she tried using this against Naruto, she began absorbing the chakra of the Nine-Tailed Demon Fox, but the pure evil in the Nine-Tail's chakra proved too much for her, and she stopped the kiss.

Trivia

 * In the Disney XD edited version, instead of licking the victim, Fūka smelled her opponents to determine their nature.