Silas had now climbed up the wall evading the crack in it caused by the knight earlier. He now stood on top of the building and suddenly saw lightning struck on both Ren and the knight. This was bad. Ren was in really bad shape, and the knight had his eyes now on the weakest instead of Silas. Luckily for Silas the distance between the houses was very small so he could tried to jump over them. He got to the end of the roof of the house close to Ren. The knight closed in on Ren, and seemed to already ready his hammer for the final hit. If Silas didn't land his attack correct it would probably be over for Ren.
He calculated in his head when the right time to jump was. He had a good sense of timing as he trained that with squash. He needed to know how and where the ball landed in order to get full potential out of the next hit. And that was the same for this situation. His falling speed and the speed of the knight closing on Ren had to that way that Silas would fall right on top of the knight. "Time to test some of my new abilities out." Silas mumbled to himself. "Hiragaiya Tamashī no Nesshō" he said apparently correctly followed by "Energy Strike." this all was mumbled so the knight wouldn't hear or notice him. If he was right the breathing technique was also still effective. Hopefully some of his other abilities might work like Critical and Precision Strike as those two would be very useful, and his Aerobatic Strike would already be active in this attack. There was a life at stake, so Silas needed to go all out.
Now was the moment. Silas jumped off the roof as his katana began to glow bright blue and if his calculations were right, and luck was on his side, he would the knight right on his head or one of his shoulders. Either of those places would be enough to stop the attack. If the attack was successful, Silas wouldn't stick around to continue fighting the knight but instead rush to Ren, pick him up and bring him to a safe place. "Ren, are you okay." Silas would say still sounding monotone but with concern in his voice. "You need to get out of the battlefield and rest. Do you have potions? You can get one of mine otherwise."