Sakuma Yazuki, who was new to Soul Society, entered the Mao Spiritual Arts Academy with Aizen.
After graduation, Yasuki Sakuma was assigned to the eighth division and gradually entered the world of captain Kyoraku.
The powerful Sakuma was about to be selected as the captain of the 10th division, but the night before the captain's test, Aizen turned her into a different person.
Will he become Aizen's puppet, or will he get rid of the shackles of fate?
What choice will Sakuma Yazuki make?