Shizuka-sama wa Hatsukoidearu, Romance wa Mada nai.

Overview

In the Meiji era, Shizuka and Nagi, both from prominent samurai clans, were attracted to each other, but they were so entrenched in the values of the old era that they did not even understand their own "love" for each other. Nevertheless, they went on many "dates" and have indeed been getting closer. However, Nagi, who is from Satsuma, became involved with the Satsuma Rebellion and became separated from Shizuka... (Source: Shueisha, translated)

Source: AniList