The Rekkouken (literally Rending Light Fists) is one of Thin Nen's special techniques and has appeared in every one of the games he has made a playable appearance in. Thin Nen charges up for a fraction of a second, and then unleashes a blazing assortment of fist strikes that wail into the opponent, slowly raising them into the air. Afterwards, Thin Nen ends the assault with a fierce palm strike that sends the opponent flying away from him. The CPU AI would commonly use this attack with the Jubakufu technique if it managed to connect.
Since Power Instinct Legends, Thin Nen could use this technique while dashing, making it a bit more effective in combat. The attack changed slightly since Power Instinct Matrimelee, where Thin Nen finishes the attack with a fierce uppercut.