Ryuhazumi (1559-1656) was a daimyo from the early Edo period in Japan, born in Toyohama National Flower City (now Taizafu City, Fukuoka Prefecture). He is the son of Higashi Higashi and held important positions under the rule of Hideyoshi Toyotomi.
In the Edo period, the daimyo Rikawa Soto's death had a profound impact on the political landscape of Japan. However, in this fictional historical story, a key factor is changed: Rikawa Soto survives the assassination attempt on his life. This alteration leads to a series of events that reshape Japan's future.