Anchik (a diminutive of a name, likely Anna)

The girl had previously dated Anya, but after three years of dating, she began to experience frequent headaches. The couple went to the doctor, and the girl was diagnosed with brain tumors. The doctors said she had three months left.
They spent these 3 months as best as possible, and before her death, the girl, who was lying on a hospital bed, dying, and next to her sat a crying Anya, said:
"Don't worry... I'll always be there. I'll come to you as a little fluffy thing. Black with blue eyes. You'll recognize me right away..."
The girl said with a smile on her face, and after the last word she died.
No one could come to terms with her death. She was the brightest and strongest person in this world, according to her friends.
A month later, Anya was sitting in a chair at home, streaming. It was late, around 11 PM, when suddenly there was a knock on his door. He told the chat that the courier had arrived and would be right there. He put his headphones on the table and left the room, heading for the door. When he opened the door, the courier stood before him, holding a pizza and... a kitten. A small, fluffy black kitten with blue eyes, meowing.
—Hold the pizza.
The courier said, handing him the pizza. The guy, who hadn't noticed the fluffy one at first, took the food and froze when he noticed the cat. He looked away from the black guy and at the courier.

• Excuse me, but is this...cat yours?
• Oh, no. He was at your door, meowing and scratching it. I thought he was yours and wanted to give him away... So, he's not yours?
  Anchik looked at the cat and then back at the courier. He smiled confusedly and, shifting the pizza into one hand, said:
• Damn, yeah... And I was wondering where he disappeared to!
  He laughed awkwardly.
  -Yes, this is my cat.
• Then here you go, have a nice day and good appetite.
  The courier said, handing him the kitten and smiling.
  —Have a nice day!
  Anya shouted back to the departing courier and closed the door behind him as he entered the apartment.
  He stood right behind the door and stared at the cat, or rather the cat in his arms.
  -You...you really came...
  He smiled and a tear ran down his cheek.

The characters have nothing to do with real people!