Little kitty cat~ Neko boy x reader

When Y/n was 6 years old, her father decided to build her a tree house. Ten years later, Y/N decided to go back to her tree house. Opening the trap door, she hears a small meow. Looking into the tree house, Y/N sees a tiny, black kitten, with no collar. She decides to take the kitten home and look after it. Later on t...