Gang of Delinquents.

"Whew." Isaac crawled out from his hiding spot and stretched his legs as he straightened his back. The darkness of the room enveloped him, making him near-invisible.

The light underneath the door heightened only the front of the door in a warm honey-like color. However, the rest of the office room was dark and ghostly.

Isaac saw his shadow dancing around the flicker of light.

He tip-toed toward the painting, took it off the wall, typed his birth date on the Numpad, and opened the safe.

Then, he opened the wooden box and grabbed the envelope before taking it out. He returned to the desk, turned on the desk light, and opened the envelope.

"Hmm, banknotes?" After opening, Isaac frowned after seeing stacks of banknotes. The room was dark, making the visibility poor, but he remembered the banknotes' texture and size.