Following the events of Hoshi no Umi, Zakuro attempts to adapt herself to her new life as a resident of Sakurashin. While Akina pays a visit to the memorial to his grandfather and all the youkai tuned by the Hiizumi family, he is confronted by Enjin, who attempts to possess his body, but is saved by members of the senate, but little they know that Enjin soon after learns to control the same power they used to defeat him and becomes an even more dangerous threat.

While Juri reconcile with her sister, Akina confronts Enjin, and learns the true reason for his grudge on the city and gets himself in a pinch when the enemy shows a glimpse of his true powers.