The thing to learn about Opium's fighting style was that he possessed no one fighting style. He'd lived for over five-thousand years and been in hundreds of armies in hundreds of empires and trained in hundreds of forms of warfare in that time. He had always been used by soldiers to ease their pain and keep them battling on. In Rome as well. Opium had even fought in the Colosseum for a time.
He laughed at the assessment. "I am the dragon, child. And I knew a few others who'll be happy to pick the flesh off your bones when I'm done running you through." He smirked and shook his head. "You really are thick. He asked me to take away his pain - emotionally, physically. And I did. You couldn't do that, your god couldn't do that. And here you want to take him back and put him right back into that misery. What kind of friend are you?"