Set during the Meiji Restoration period of Edo era Japan, Naoyuki belongs to the 8th generation of the Inoyama family, a wealthy family known for finance & accounting. He is also a gifted mathematician and uses the abacus with extreme skills. Naoyuki works under the declining Kaga domain. Because of this, Naoyuki and his wife Koma suffer hardships as their stature and wealth dissipates.

In this love story set in the Edo period, 27-year-old Oharu is a genius in the kitchen. Oharu attracts the attention of the master chef of the Kaga Domain, who arranges for her to marry his son and heir, 24-year-old Yasunobu. But, Yasunobu is cold to his new wife, and he's more interested in swordplay than cookery.