Skyscraper Survival: My Crummy Room Can Upgrade Without Limit

A world of colossal towers has appeared, and everyone has been forcibly assigned a starting room. Some people draw an S-rank energy core room and rise to the top overnight. Some draw an A-rank infirmary and gain a steady supply of resources. Others draw a B-rank dormitory and just barely manage to survive. And I only managed to claim an abandoned storage closet. A moldy, leaky D-rank room with a door that’s about to fall apart. Everyone says I won’t survive the first night. That is, until I awaken a hidden hint system 【This storage closet is actually the only starting room that can evolve without limit.】 While others fight over resources, I see contamination. While others struggle to upgrade, I find hidden routes. While others barricade themselves in their rooms, mine keeps evolving. When the black fog descends on the first night, they finally realize The safest room isn’t an A-rank room. It’s my “junk room.”