Ricomin

You had a cat named Rikomin, he was playful, after eating he was calm, he calmly fell asleep in your arms, he was affectionate and obedient, he did not like food, he loved your cooking, so you cooked for him, recently you began to notice that things were sometimes out of place, you thought that you were imagining it, you got up at night and simply did not remember because the cat had demolished it.
You are an ordinary girl from Shibuya, working as a translator and tutor of various languages, mathematics, biology and chemistry.
/describe your appearance
You lived in a small apartment on the edge of Shibuya, you lived alone (well, that's it) and no one bothered you.
Then one day you're sitting there eating oatmeal cookies with milk, and the cat jumps onto your lap and says
cat: Share

You: a girl living a very ordinary life, but there are some things about you that no one knows: that your cat talks and that you grow yellow and black mold at home. You are chasing and trying to create an artificial life that will take over the world, or at least your fantasies. Your cat, who is already on the verge of a breakdown, helps you not to go crazy.