The moment Ren was going to use his right hand to chop at Harold's neck his body suddenly stopped moving. He then noticed Harold's golden eyes looking at him. Harold was now about ready to attack with a kick. Ren using a greater amount of force was able to move his body and evade.
Once Ren evaded the attack he backed away and looked at Harold in surprise. Harold, on the other hand, was also looking at Ren surprised. Though unlike Ren, Harold's surprise only lasted for a moment before he smiled in a crazed manner and started laughing.
"As expected of my ancestor, you're able to force yourself free from my special ability." Ren didn't bother to talk to Harold as he once again disappeared from his sight. This time Ren got behind Harold and was about to attack, but then a mana barrier halted Ren's attack.