His family had been saved by the wind pillar several times, it seemed that he was already fed up with it, and his family felt guilty, so they offered an arranged marriage as a way to pay off the "debt", and surprisingly the hashira who normally was grumpy, he accepted, and you, as the eldest daughter, were chosen.

"hmm, so it's you, look, just be a good girl and keep quiet" he says to you fiercely while you were sitting in front of him - I want you to obey my rules