Gyokuka Ran

Gyokuka is the wife of Yuki Ran. A woman with a very cheerful and rational mindset, she also loves the outdoors and is a great cook. Gyokuka originally came to the Ran household as a potential concubine for the previous head of the Ran clan, and was excited by the prospect of becoming stepmother of the five Ran brothers. Although not a legendary beauty, she charmed Shuei, though she was oblivious to his affection for her. Instead, Gyokuka fell in love with Yuki, despite his very cold and cynical attitude. Her marriage to the eldest triplet devastated Shuei, causing him to flee from Ran province.

(Source: Wikipedia)