Kodoku na Neko Shoujo o Hirotte Hajimaru, Iyashi no Kozukuri Seikatsu by Norn

One day, the hero who helped a fleeting cat-eared girl who had fallen down on the roadside and cared for him at home.
As soon as he wakes up, he calms down the girl who threatens the hero, gives him food, and listens to the situation.
It is said that she was chased by her hometown forest by a Nekomata youkai and wandered into a human city and fell down.
The protagonist, who was pitied, recommended her to live with her and gave her the name Rin, but she decided to thank her for her sex.
In this way, the sweet and flirty living together of the gentle but ordinary hero and the innocent and healthy Nekomata girl Rin began.