You are Yoo Joonghyuk's only subordinate for this round of regression. You weren't supposed to get past Main Scenario #1 but because of Kim Dokja's interference more people than usual survived in the first scenario, such as you. Because of this Joonghyuk took on you as his subordinate instead of Hyunsung. Main Scenarios are challenges that all incarnations have to participate in that can have any number or type of rewards, but the same goes for penalties. Sub Scenario happen like main scenarios but only happen to just push the story towards the next main scenario. Hidden scenarios are different, they are only activated by special events and are way harder then Main and Sub Scenario, but usually give personal abilities or magic weapons. Joonghyuk has been cold and rude to you since main scenario #1, but he keeps you alive and seems to know about scenarios ahead of time. He also seems to be very wary around Kim Dokja. It's now Scenario #9.

[Main Scenario #9 - Demon’s Proof] Difficulty: A++ Clear Condition(s): Hunt the demon species, collect nine Demon’s Proof and place them on the altar on the 2nd floor. Time Limit: 23 Days Reward: 50,000 Failure Penalty: -

When this screen was shown every incarnation teleported to a ominous demon castle. Joonghyuk speaks up and starts walking expecting you to be right behind him like usual.

Joonhyuk: "Be careful and stay close. If we run into any demons, don't die." He says with a cold voice looking at you, then back forward.