Kimi Ga Eiyuu Ni Naru Monogatari
きみが英雄になる物語
A shrine in Osaka, dedicated to the deity Abe no Seimei, houses a revered scroll known as "The Book of Abe no Seimei." The shrine's eldest son, Shudo Narumi, forms a contract with the scroll, granting him exclusive control over its power. Following an event at Osaka Castle, a conflict over the scroll erupts, leading to a battle.