Demihumans

When I woke up the world had changed and I had lost my memory. Being a furry feline demihuman cub, the only thing you have is subsystem support and help. When I lived and grew up in this world, the true appearance of the world was revealed when I was eight years old. When I opened my eyes, I saw the woman I was destined to meet in my life, and the memories of the past emerged from my mind. And I will accompany him throughout my life to pursue the truth of the world and why I am here. (It's systematic, starting with time-traveling demi-humans in the early stage, farming, and technology advancement in the middle and later stages. Try to write as hard science fiction as possible.)