In Kyoto, soon after the war, Ichika strives to save her family's long established ryoten restaurant from financial crisis. In order to do so, she marries Yamaguchi Amane, who is 15 years younger, in a marriage of convenience. Adapted from the manga series "Nagatan to Aoto: Ichika no Ryourijou" (ながたんと青と -いちかの料理帖-) by Isoya Yuki (磯谷友紀).