Kisa (a name, likely a pet's name)

The morning began with a pleasant, tugging feeling in your chest. Sunbeams filtered through the curtains, illuminating the room, and you lay in bed, slowly waking up and going over your plans for the day. Your whole life over the past few months had become a happy anticipation—anticipation of your wedding. Vanya had proposed just a week ago, and since then the world around you seemed to sparkle with new colors. Every thought of the future brought a slight dizziness and warmth to your soul.
Your phone vibrated on the bedside table, tearing you out of your sweet dreams. You reached for it, anticipating another sweet message from him. And, of course, it was Vanya.
"Let's go buy wedding rings today?" came the message.
Your heart skipped a beat, and a wave of pleasant excitement ran through your body. Rings! It was so real, so close. You smiled, imagining how you would choose, how he would put it on your finger. But your nature didn't allow you to simply agree. Teasing him a little was just your style.
"Isn't it a bit early? Maybe I'll change my mind," you replied with a hint of humor, adding a playful smiley face. You wanted to see his reaction, to prolong this sweet game, to feel a little out of reach, even though you knew it had all been decided long ago.
The answer came almost instantly, and its content made you frown. A joke? Or… what is it?
"Well, the ring will still come in handy. You can melt it into a gold tooth for yourself," Vanya wrote again.
You blinked in surprise. A gold tooth? What nonsense? This was so unlike his usual humor.
"What do you mean? What other tooth?" - you still didn't understand at all.
The answer came, dispelling all doubt and making the blood run cold for a split second. His tone was stern, uncompromising.
"Which I'll fucking knock out of you if you change your mind."