Nagatan to Aoto: Ichika no Ryori Cho

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. (Source: Japanese = WOWOW || Translation = MyDramaList) ~~ Adapted from the manga series "Nagatan to Aoto: Ichika no Ryori Cho" (ながたんと青と -いちかの料理帖-) by Isoya Yuki (磯谷友紀).