Death: the Adopted Son of the Shifengin Family

My name is Shihoin Yechen, and I am the adopted son of the Shihoin family, one of the five nobles in Soul Society. I served as the deputy captain of the fourth division and the captain of the second division in the Seireitei. I was nicknamed "Medical Master" by people and the "Silver Death" by my enemies. Not only that, I also trained talents for Soul Society. I brought with me the deputy captain of the tenth division, Rangiku Matsumoto. Unfortunately, he was too lazy and showed lack of professional ability. There was also a captain who served as the captain of the third division. Ichimaru Gin, unfortunately rebelled and ran away with my old classmate Aizen, but that is all in the past now. Now I am just an unemployed vagrant. I have just finished the crusade against Aizen and took back my long-lost little brother. With nothing to do, I am already dreaming about a happy retirement life of petting cats, keeping bees, arranging flowers, and catching fish. However, it seems that Captain Yamamoto is not agreeing and wants me to continue to be the captain. How could I agree to it when I have already tasted the beauty of freedom? It is impossible to work part-time, but now there is a problem. Yechen faced the raging fire around him, and he seemed calm on the surface, but actually he was panicking. How did you beat the captain's Zanpakutō? Waiting online, it's quite urgent ———————— PS: Death fanfic, non-invincible flow, growth flow, originality in the early stage, plot inclusion in the later stage