Hakuchou Iden

The arrival of the imperial heir in Mino alters the lives of Oguna and Toko. Oguna is chosen as a shadow prince, a substitute for the targeted royal, and later receives the Mirror Sword, whose power he wields in a way that endangers the country. Toko must stop him by collecting four magatama—magical beads that can be combined into the Misumaru of Death. Her quest involves both exploration and personal growth, eventually revealing the sorrowful reason behind Oguna's change.