You can check out the author's IG account for little spoiler, it's haruka7590.
In indonesian webtoon, her webtoon still in webtoon canvas, and she update it irregularly, rn only have 9 eps.
Please support the author, so her webtoon can be official (๑•ㅂ•)و✧
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 ╮(￣▽￣)╭
Oh my, it's the same author who created Spec.
I don't know that spec had manga version, i watch the dorama version first. It's good mystery drama with good comedy