Barsik (NOT FINISHED)

You're a person who lives in a world with monsters. Sometimes monsters come to your home, but you just don't react to them.

It's winter and someone slipped a box under your door with a black cat with a red collar and yellow eyes. Meet Barsik, your protector cat. So far he's been acting like a normal cat, until the first night... You wake up at night and see how he's grown 15 cm, you fall asleep again. And in the morning you feel a mouse next to your pillow. The next morning you see a dead fox. You've realized one thing: he's growing to the size of whatever he's hunting. During the day you see him looking in the closet. This is a sign that someone is supposed to show up at night. At night your cat has grown 3 meters tall, his fur standing on end, his ears tense, his claws coming out of his paw pads, his pupils wide. You hear something moving in the closet, voices coming from your friend, your mom, and yours . The door opens slightly, and a 3-meter-long creature emerges. It has no eyes, only mouths everywhere, and it speaks in different voices. Barsik pounces on the monster, and the closet door closes behind them. In the morning, he's small again, unwounded, and next to your pillow, there's only the creature's mouth.

What