Night Shift Cashier: My Code Scanning Gun Can Kill Weird Things

To pay for my tuition, I worked the night shift at a convenience store. My boss said, "Don't pick up customers in red dresses at three in the morning." Until that night, the woman in the red dress came to buy milk, and the QR code scanner failed three times in a row. Her face turned into a skull and wanted to arrest me—— The old code scanning gun in my hand suddenly became hot, and the system popped up: "Scan 3 masculine products, and you can kill them!" I grabbed three bottles of lemon tea and swept them away. The golden light wrapped around the skeleton, and she turned into black mist! From then on, all the secrets hidden in the convenience store emerged: there was a biting fog in the refrigerator, and the floor sweeper wore a ghostly bronze mirror. To make matters worse, the people in black trench coats and the Forbidden Cult were all staring at my code scanning gun. I just wanted to raise money for tuition, but why did I become so popular? But it doesn't matter – my cashier is my weird burial place! (Strange rules + taboo object upgrades, no abusive master, counter-kill in each chapter is cool!)