The best people will lead the best nation! I propose to give them the treatment they deserve. A huge nationwide selection competition is launched. In other words, the curtain rises on the National Student Body President Contest. This tournament to determine the true president, the "King of the Association"... The "Kaiou Battle" became known as the "Battle of the Kaious". There was a high school that won the "Kaiou Battle" for the first time in a row. St. Marduk Academy was created to produce the elites who would lead the true Japan. Among the fierce fighters who excelled in both literary and military arts gathered at this school from all over the country, there was one who was the first to win the "Kaiou Battle".Kanzaki Reika reached the pinnacle of student body president as a first-year student. However, the glory she had achieved through her personal power was lost upon her graduation. Then, an eccentric coach is assigned to the school. With the election of the student body president just around the corner, the coach immediately announces the members to be selected. "Wow, I'm going to be fighting against my sister?!"Tsurumi Mayu, whose guts and physical toughness seem to be her only merit, is assigned to the team. Do you have what it takes to defeat Kanzaki Reika and represent your school? Tsurumi, go for the king! The coach's passionate words call for a miracle!