Marriage hadn't been on his mind when he entered the Kuchiki kingdom. Until, of course, he meets Kuchiki Rukia.

He had made the mistake of making his wife a Kuchiki; he would not make the same mistake with his wife's sister.

She is the heiress of a noble family. He is the leader of Seireitei. She has always believed in marrying out of love, until she meets him: an arrogant asshole in a disheartening predicament. He has always believed in marrying out of duty, until he meets her: a violent brat with a heart greater than his entire kingdom.