MTL - Longevity Chart - Chapter 148 strong buy strong sell

Xia Yan passed through to the world of Bleach and became an eleven-year-old boy. He was rescued by Renji and Rukia in the Seireitei, and he was studying at Shin’ō Academy, and he was a student of the same class.
He is a top student of the Shin’ō Academy, and he is vying for strength by various teams. In the end, he has entered the first team of secret mobile maneuvers.
He will use punishment to kill every person who tries to threaten the martyrdom and protect his loved one.

- Description from Novelupdates

Hiro transmigrates and finds himself in the body of an orphan that’s about to be evicted from his orphanage. It wasn’t anything personal, but the orphanage’s policy doesn’t accommodate children who have reached the age of 16.From the gates of that humble establishment, Hiro slowly explores the facets of this world that was both familiar and unfamiliar due to its uncanny resemblance to his previous world—Earth.With his Daily Life RPG System urging him to excel in every aspect of his daily life, Hiro marks his presence in both the mundane and mystical circles of this new world.

He became a teacher at the best magic academy in the empire.
….For being mistaken for someone else.

A mortal youth accidentally stumbled upon the path of immortality and struggled to move forward on the arduous journey of seeking immortality.The road to immortality is more difficult than reaching the heavens, yet despite the countless obstacles, his determination to pursue immortality remained unwavering.Looking back, the green mountains still stood, but his old companions had all turned to bones.