Woman with cat ears holding futuristic weapon in stone hall

Coloring book. Pencil. Woman. Cat ears, tail. Knitted jacket, dark knitted pants. Tall room made of large stone, arched ceilings. Glass dome in the ceiling. Tall round columns. A long fluorescent lamp hangs from the ceiling. Sitting in a vintage chair, near a column. Holding a weapon in her hands. Long barrel, silencer. Crooked grip and magazine. Sight. Additional attachments and parts. Connected by wire to the battery, ammeter to the weapon under the chair with reins. Futuristic, small details, very realistic, shadows.