Almighty Coach - Chapter 5: Retain Customers

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

Thrown into a brutal world of swords and sorcery, his memories stolen by an unseen force, Magnus wanted only one thing: to go home.But every kingdom, devil, and god — along with regressors, possessors, and fellow reincarnators — seeks to carve him apart.Survival demands war. War demands survival.And with a System that hides more than it reveals, Magnus is dragged down a bloodstained path... one battle, one betrayal, one broken world at a time.

Ethan Cross was a politician serving as the Secretary of the Department of Energy in the United States of America. He was also an engineer and a scientist prior to his position, to which he was hailed as a “King of Technology” as he was able to invent revolutionary technologies one after the other.But his life was cut short when the vehicle he was in was rammed by a truck from the side, and immediately after, he awakened in the body of a royal prince, Bruno de Elysea, who was a complete opposite of Ethan in terms of knowledge and capability.One thing he noticed is that in this new world, everything was so backward. Technology and politics. He desired to change them but by doing so, caught the eyes of those who opposed it.

In a world filled with Ability users, Demons and Extraterrestrials, Damion Darkblade finds himself born there without any parents to care for him, or an Ability of his own.This rare deficiency causes him to get bullied by his peers always, and his life became a living hell in the academy.The bullying gets so consistent and terrible to the point where he almost loses his life one day.However, with the interference of fate and a stroke of luck, he is recognized by someone with unprecedented power, and Damion's quest for revenge and ultimate glory blooms.[Congratulations Host!][You have received the Dragon God's Legacy][You have unlocked the Ability: Shadow]