Bleach: Getting Stronger Starting from Teaching at the Spiritual Arts Academy

In a world where spirits and humans coexist, Shikatoshi Nanatsuki, a young man from a parallel universe, finds himself transported to the Soul Society of Bleach. He discovers that his patron, Lu Quba Yunzhai, is terminally ill with only a few years left to live. To overcome this setback, Nanatsuki awakens the "teacher system," allowing him to become stronger by teaching others. He becomes a teacher at the Spirit Arts Academy and inherits the Shikatri Dojo, dedicating himself to mentoring students and gaining the strength to stand on his own in this new world. Years later, the renowned Aizen Sousuke approaches Nanatsuki, urging him to fill the void left by the Throne of Heaven and become the new top authority in the Soul Society. With this challenge, Nanatsuki's journey as a teacher and leader begins, and he sets out to prove that "teachers will stand at the top!"