Bleach: I Got Stronger by Teaching at the Spiritual Arts Academy

Shikatori Natsuki traveled to the world of death and became the younger brother of the first captain, Shikatori Baunsai. He thought he had thighs to hug, but found that Shikatori Baunsai was terminally ill and had only a few years to live. Fortunately, he has awakened the teacher system and can become stronger as long as he teaches. In order to have the strength to gain a foothold in this world, Shikatori Natsuki became a teacher at the Spiritual Arts Academy, inherited the Shikatori Dojo, and worked hard to teach and mentor students. [Liuchuchenxi completed swordsmanship training under your guidance and received the reward sword skill·Red Tide] [Aizen Sosuke completed the ghost path practice under your guidance and received the reward of Ninety Broken Paths·Black Coffin] [Kurosaki Ichigo's strength has greatly improved under your guidance, and he received the reward Holy Text: D] Many years later, Aizen Sosuke suddenly came to the door: "The vacancy period of the Throne of Heaven has lasted for too long. Please teacher, please take action to end this unbearable vacancy period!" "From now on, teachers will be at the top!" (This book is also known as: "I Teach Kendo in Soul Society", "My Disciples Take Me to the Soul King's Palace", "Becoming the Lord of the Four Realms from Teaching Kendo")