Review Detail of Harley_DB in First Demonic Dragon

It was great till Chapter 332 when the author broke his own set rules and made it so the Dragon Slayer sword given to Jadaka can kill and permanently injure anyone not dragons like it’s supposed to. He almost kills everyone in the story that could have easily beat him before by just having the sword as it apparently weakens everyone to a state he can beat them, not just dragons like the author explained at the end of the chapter but forgot he already broke that rule so it makes no sense🤦‍♂️ I get Helios died cause he let his guard down and was stabbed by the sword but, now everyone in the story with no dragon blood in them is getting permanently disfigured for no reason as the sword somehow make Jadaka overpowered. The author literally as soon as anyone got hurt would state “and they knew it would never fully heal” like how? It’s supposed to just permanently hurt dragons and weaken them, why is it affecting everyone with no dragon blood in them?