Motoshima accidentally fell into the back room, and the musty smell of the yellowed corridor, the buzz of fluorescent lights, and the roar of unknown entities became his daily routine. The only hope is a hidden reminder that only he can see. From the endless maze of Level 0 to the dangerous deep space, he evades the pursuit of entities, solves layered puzzles, and struggles to survive in despair. Those cold reminders are his weapon against fear; his obsession with survival is his confidence not to give up. This drama is adapted from the Tomato novel "Back Room Survival, I Can See Hidden Hints" and the author Constantine wants to quit smoking.
