Reborn as a Beast Tamer, I Get Stronger Just by Eating

[Zombie girl] [Master and servant] [Yuri] [Urban contract genre] [Beast-taming and growth] [There is combat, but it isn't nonstop fight-focused wish fulfillment. Fair warning] Do people go to heaven or hell when they die? No, they turn into zombies. At least, that's what happened to Jiang Jiang. She transmigrates and immediately saves a beautiful girl, only to nearly get killed by the girl's family before she can even turn her life around. As a defective puppet, she obviously isn't qualified to form a contract with a genius girl. But she discovers that eating makes her stronger? The zombie girl's body seems to have a problem. If she goes hungry for too long, fangs grow in, and when her mind is clouded, she starts eating indiscriminately. (When hungry, she literally wants to eat her beast tamer; when not hungry, she wants to eat her beast tamer in the biological sense.) Drink some milk and gain several skills. Eat an ordinary fruit and instantly gain the equivalent of years of cultivation plus a heap of high-grade resources. Everyone who sees this thinks something is off. Why does this puppet have so many skills? Whose new-model puppet is this? How about selling me one?