Kurisu Eiji is a certified tax accountant. He respects his father, who runs a tax accountant's office. Dreaming to work with his father, Eiji has worked at a major tax accounting firm and he has broadened his work. Due to an incident, he experiences frustration. At that time, he meets horse owner Sanno Kozo. This makes a big change in Eiji's life.(Source: AsianWiki)~~ Adapted from the novel "The Royal Family" (ザ・ロイヤルファミリー) by Hayami Kazumasa (早見和真).