Episode 8 Endings and key

by Prissydixie posted Jun 17, 2016
How many endings are there in episode 8??? Cause I got the ending where seo hyun took jae and sunny to a cave where they'd be safe from the cleanup. But I also saw a video of someone being able to open the chest in the fortuneseeker base that contained a video leading to a different ending. How do I get that ending? I know it requires a silver key to open the chest but from what I've heard the key no longer exists
So does that ending still exist or was it deleted too?