I was reborn as a beast-man in another world. I will live seeking happiness.

A woman who grew up in a loveless household in Japan is reborn in another world as the youngest daughter of a beast clan. The protagonist, who finally obtains a true family by receiving boundless love from her beautiful parents and older siblings, grows up with a special constitution that allows her to transform into both human and cat forms. However, one night, their home is attacked by beast hunters, and her entire family is captured. Only the protagonist survives, hidden in the form of a kitten by her mother's quick thinking. Cast into solitude at merely five years old, she relies on her cat form and knowledge from her time as a Japanese person to repeatedly survive in the forest and infiltrate towns. And the protagonist makes a vow—"I will definitely reclaim my family." In the form of a small kitten, with the determination to face a harsh fate, her journey of hope begins.