The Twins.

Creak…

''Let's see.'' Isaac dragged a wooden stool behind him and placed it underneath the crystal. Then, he stepped up and stood on the wooden stool, trying to take the crystal into his grasp.

The crystal was draped over by some kind of wool. It was in the color of ugly color, and the texture seemed very thin. Isaac carefully moved the fiber out of the way, afraid he might accidentally rip it in half.

After the wool was moved out of the way, he could see the dark yellow crystal. It wasn't as bright as the ones he'd seen in Summer Realm.

Then, he placed his hands on the crystal and slowly removed it from the ceiling.

Clank!

Isaac flinched after hearing some unnatural sound that he wasn't expecting to hear. He saw that the crystal was removed and had a bad feeling.

Instantly, he moved it closer to take a good look. First, he checked for any cracks, but there weren't any. Soon, he found out that the crystal was intact. However, the ceiling had a tiny crack.