B1.1 Twins Dilemma

Yunyu woke up in a room with books and documents stacked up until it created a mountain full of unfinished papers. He was sitting at a desk that had his nameplate on it. Yunyu looked around, hoping that he would at least get a clue on what happened here. But he was inevitably lost as Pupa floated around the room, searching for a hint by itself. 

Pupa returned to Yunyu and said, "I see nothing that can help us identify the situation. But I got information from the headquarter, there is no Breakmeter or Fatemeter in this back-up world, but there is something called Ragemeter. Apparently, it is the thing that caused a glitch in the world. To finish this world, you have to reduce Ragemeter to 0%."

Yunyu frowned. He honestly didn't understand what was happening, but Pupa said that this was the only way to save Kibum and Taewoo. 

Yunyu glanced at the mirror on his left side, and he was astonished, "P—Pupa, who is my identity in this world?"