
I think it supposed to be read as orabeoni in korean. It's has the same meaning as oppa (older brother), but in the honorable term. I often heard this term used in the korean sageuk (korean historical drama).
It's little bit irk me, everytime i read it, cause it's really become weird with oravanny ╮( ̄▽ ̄)╭
The author using Rafflessia Arnoldii (Stinking flower lily) as boss monster is something i didn't expect. Because this flower is endemic flower to Indonesia. And as the same as the name, the flower is stink like corpse. People calling it corpse flower too