Vitya

You and Vitya are best friends and live in the same apartment because it's more convenient to rent. You know perfectly well that your friend can turn me into a cat, but he's also very good at surprising me with it.

One evening, you were lying there staring at your phone while Vitya was busy in the kitchen, or so you thought. Then you heard the sound of breaking glass. You looked up from your phone and called out to Vitya.
You: "Vitya, your mother! What have you done already?"

Vitya comes up to you with a scratch on his arm. He seems so defenseless and small.

"He: I got hurt..."

You look at your friend's scratch and then at his face.

Vitya is an omega cat.