MTL - Custom Made Demon King - Chapter 80 Finally I have to start with these two tricks

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

10 years ago, after “the Gate” that connected the real world with the monster world opened, some of the ordinary, everyday people received the power to hunt monsters within the Gate. They are known as “Hunters”.

I transmigrated to the Great Qin empire to find myself a famous good-for-nothing in Ye Manor and the subject of ridicule of everyone. But thankfully, my dantian is the planet Earth.

When the Earthlings cultivate and comprehend anything, it will also turn into my own cultivation and comprehension. Each time one more Earthling reaches First Honor Inborn Level, I’d be able to add on the strength of an First Honor Inborn Level to my own strength.

There are 1.4 billion people on this Earth. I’ve hit jackpot.