Dongwoo was casually walking along the hallway when he spotted something strange. “Ya!” He rushed towards the wall and saw symbols. He jotted it down and meets with Sunggyu for him to translate.

Pull the right book and I’ll open welcoming you.

Astounded by the clue, Sunggyu called for the others.

“Is this the last clue?!” Myungsoo asked. “I think so…any idea what it means?”

“Right book…..book…Book? BOOK! Must be in the study hall!” Woohyun exclaimed.

They all rushed towards the study hall. “Pull ever book you can see from the shelf. Don’t stop until nothing opens up..” Sunggyu ordered and they began pulling every book.

“Not this..” “Still, nothing happens..” “Open up!!” “Why exactly do we have many books here?!”

“That’s right! Leehun must put all this books here so we wouldn’t notice it! WOAH! Daebak..”

After just a few minutes, the whole room was a mess as books scatters and piles up on the floor.

“Hurry up! Leehun must be coming back soon!” Dongwoo announced.

With all the books been pulled leaving only one left at the shelf, they slowly walk up to it. “Ready? This might be it…” Myungsoo slowly pulls it out.

“……Huh?” They all froze in shock as nothing happened. “But..this is the last book in here!!” Woohyun protested.

“Guys!” Sungjong then noticed something.

Among the shelves against the wall, a particular shelf caught Sungjong’s attention. They all walk towards him.

“What is it?” Hoya asked.

Sunjong then pointed it.

Against the wall, a perfect rectangular shape frame was hanging from it. “I guess, we basically have to pull this and---“

*CREEK*

The whole wall opened as Sungjong pulled it and realized it was a book, not a rectangular frame.