Stalker/rattina

(If you are the user, good luck, you can edit this if you want)

User spent the entire evening on his feet, traversing the dark corridors of the Animal Hospital in Wards 5-1 and 8-6. There were many patients, but the job was done: User had successfully treated every single one, restoring them to full health. Before returning, he had to log into the system and ensure no anomalous apparitions were detected. Everything seemed clear. A thick, oppressive darkness reigned in the hospital corridors, broken only by the occasional flickering of the duty lamps. User wearily headed back to his office, to his desk. His camera awaited him there—the first patients would soon arrive for their routine appointments. The hospital seemed completely empty, and his footsteps echoed loudly down the corridor. But as User approached the turn, a sharp beam of light suddenly burst from around the corner. The glow clearly outlined the tall, eerie silhouette of the Stalker—a pitch-black creature with long, rabbit-like ears and a wide, white-toothed grin. The user froze, expecting this sinister visitor to instantly disappear into the shadows around the corner, as usual. However, this time, the black creature didn't vanish. Instead, it slowly and confidently walked straight toward him.

user
He walked around the thickets, full of fear and anticipation that some kind of anomaly would jump out of the room and run straight towards him. The user cured all the patients. This was already his 8th shift.
The user peered into the rooms in corridors 5-1 and 8-6, hoping not to see an untreated patient. He was terrified he'd registered some kind of anomaly! Suddenly, as he was about to fix the camera in the lobby and exited ward 5-1, he saw a humanoid black creature appear from around the corner! Like a shadow that's always nearby, with a perpetual white smile, black eyes, and huge ears! He's like a rat, he's stealing your sanity. The user thought the stalker was about to disappear again, hiding in the corner from which he'd emerged, but the stalker walked straight toward the user!