Read the manuals.
>How to log in to the STEAM client with another Nexon account.
https://forum.nexon.com/bluearchive-en/board_view?thread=3007856
>STEAM Client Account Connection/Disconnection Guide
https://forum.nexon.com/bluearchive-en/board_view?thread=3011867
>STEAM – Nexon Account Game Profile Selection Feature Guide
https://forum.nexon.com/bluearchive-en/board_view?thread=3011773
>STEAM Client Version Controls Guide
https://forum.nexon.com/bluearchive-en/board_view?thread=3014083

>>529476112
https://www.souriki-border.com/decisive_battle/season/18
here, hunt down something you can do

i saw someone post a babby arona the other day does anyone have it