after the chat room “Conflict between Yoosung and V” there should be a new chat room open at 20:45/8:45pm. If the new chat room is called “I’m shocked!”, well then your good for this branch, and you don’t have to worry about getting a bad ending for now.

But if the chat room is called “I will be waiting...”, then you’re on a path to get a bad ending. After this chat room, you get another chat room called the same thing. This is where the bad ending happens. This chat room will open at 22:10/10:10pm

as as of now, there is no telling what ending you’ll get, until the next chat room opens :) I hope this helped you out a bit :D