Need Help for Password in Arca.live

[apawe3]

Hello everyone
i want to ask for help to solve a password from this site.

https://arca.live/b/genshinskinmode/114044052?category=붕스모드🔞&p=1

this is the mod i want to get, but they give a riddle like “ㄱㄹ+소속(3글자)”.
i know the national rule for this “ㄱㄹ” but the other hint is kinda hard for me.

does anyone can help me ?

[ration]

소속(3글자) means the character’s affiliation(소속) in three letters(3글자), Acheron is one of the ‘Self-Annihilators’ and they are called “자멸자” in Korean, so the password would be: ㄱㄹ+자멸자