My Master Is a Big, Dog-Like Knight

Rubina, the eldest daughter of a baron's family, lost her father to illness and soon after, her engagement was broken off. The man apparently decided to marry Rubina's younger sister, who is an exceptionally beautiful girl. Just as she was about to be kicked out of her home by the two of them, the knight Kress, whom she had previously saved when she was injured and collapsed, appeared in a magnificent carriage. With nowhere else to go, Rubina was able to work as a servant for Kress. But this knight, despite his wild and strong appearance, has expressions and gestures that are somehow cute, like a large dog... Rubina begins to be drawn to Kress little by little...!?