My aunt had two cats, a brother and a sister. The sister got pregnant from the brother at 5 months, and there was a litter of four. My aunt got rid of all of them, except one. She was going to take it to a shelter, but I decided to take it instead. He's 10 weeks old and I named him Gigi.

What do I do know? I have an adult cat named Freddy. They seem really uneasy around each other, so I'm keeping him in my room for now with some food, water, and a litterbox. Do I need to get him soft food? How do I introduce Freddy and Gigi? Anything I should look out for since Gigi is inbred?

Pic related.