The bug was that one of sunset's skill coming into contact with the event supply boxes caused a chain reaction and the skill's range increased to cover the whole event map causing everyone to freeze. (This is what I understood)
I think he messed with the system with cheats, or malware into the game I don't know and that made the game buggy.
Thank you sm!
Ah, so that moon fairy skill is sunset's? No wonder, I mistook it as the boss monster's skill so I got confused. Thank you for the explanation!
That means the bet from the first chapter about them meeting up irl is before one of them confess? Also, I'm still confused about the exploit of the system's bug means, could anyone explain what sunset did