Calm.
This was Erian's main change ever since he migrated. No matter how much he achieved, he would never lose himself in power. The arrogance he showed before was to reach his main goal.
Erian stared at Grand Elder and the latter had extremely complex emotions as he struggled to choose.
After a long time, he let out a breath: "Since you don't want to give up the Blood Symbiote Bio-Reactor, I can only take you in but you are not my disciple yet. Of course, if you're unwilling, you can take other Elders as your mentor too or you can change your wish. I've done the most I could."
Most I could.
Erian understood how Grand Elder felt. Her favourite disciple had died due to learning the Blood Symbiote Bio-Reactor and she had promised to never take another disciple.
However, she had promised Erian a wish and the latter's wish wasn't unacceptable.