Sorry for the late reply!
1: The game is fully complete :D Any updates are just to fix any issues that might pop up or to add translations for other languages if I can!
2: I'm working on a project right now but it's definitely going to take a while since I'm a solo dev + full time worker TTwTT
3: The cat's gender is meant to be however the player sees fit, just like with the Player character in the game. Some people of other languages have defaulted to male since they lack gender-neutral pronouns, but anything's fine :D
4: I made the OST using Beepbox. It was my first time making soundtrack music, but it was a lot of fun!
5 / 6: I drew nearly everything myself with help from references. The backgrounds I didn't draw myself were photos on Pexels.com that I edited using Medibang
7a: The player character? Can be anything the player wants :D
7b: Me? OwO..