Agis was two stages below Calina and Rean in cultivation, so his attacks were the least destructive. Obviously, as someone extremely prideful, that annoyed him very much. However, what bugged him more than anything else was Roan's Death Style manual.
'How can this shit work so well? Even my master's techniques can't use the meridian pathways to such high efficiency. Even though I know that the twins are reincarnations, they came from a place where cultivation didn't exist. Roan said that all of this was due to his own comprehension, but could that be true? Can his understanding make up for hundreds of years spent on the skills taught to me?'
He couldn't be blamed for thinking like that. Agis was not told that Roan was Death, someone who had lived for much, much longer than his now 'dead' Master. Naturally, he found it hard to believe.