(You make a clone for me to do these on)
As you make the clone I'm already all up on him, grabbing his head with both hands, fingers grasped around the back of his head so that I can properly perform the technique. The moment I grab his head I start to pull it downward with incredible force while also bringing up my left knee to pound it against the clones face. As the knee is going up and the clones head is going down I also channel fire chakra within my knee to highly heat it up, though without some sort of chakra sensing or doujutsu the clone wouldn't know the difference. The knee smacks the clone within a split second, causing massive damage from the impact while also causing burn damage from the fire chakra heating up the blow.
________
I simply take out a sword and flow my fire chakra through it to heart it up, but just like any other Devils fist technique, the enemy won't be able to tell the difference between the blade having been heated up. This grants my sword extra cutting ability, sort of like how hot knives slice through butter with relative ease. I'd run to a near by boulder and cut straight through it. u.u
Question... The sword one makes it S-rank cutting ability right?