Light Novel Other Size My husband is a big dog knight, and his fiancé is going to marry his sister, so I'm going to take care of the Magic Knight!

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Rubina, the eldest daughter of the Baron's family, was broken off soon after her father died due to illness. It seems that the man had decided to marry Rubina's sister, who is an extremely beautiful girl. When they were about to drive her out of the house, Kless, the knight who had helped her who had been hurt and fallen, appeared in a luxurious carriage. Rubina, who had no place to go, was able to work as a servant under Kless. Who is the knight? He looks wild and strong, but his expression and gestures look cute like a big dog. He gradually began to be attracted to Rubina?