Domineering Mr. CEO and His Impudent Love - Chapter 308 - 311: Don’t Be Afraid, Mom is Here

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

[ THE EARTH YOU KNOW WILL END IN SIX DAYS ]After the text appeared the world was no longer the same. The apocalyptic scenarios that humanity could imagine began to occur one after another.Monsters, meteors, natural disasters. All of them came after the six-day countdown ended.Fortunately, humans are given something to fight back. Or actually to make things much more interesting. They became Players.No one knows who is behind all this.Humans have no other choice but to survive amid this chaos by playing.But Clyde didn't live it like the others. Because he was the only human who had the lowest difficulty in the End Time Game.He plays in Easy Mode, and he already read this kind of thing in web novels. Except, there are no such thing as 'Regressor' in those webnovels. Until he met them.“Wait, I only hit that monster once and it died right away?!”“Whoa, I got an A-grade weapon right away!?”“There are... 4 Regressors?”How is Clyde's journey in this apocalyptic world with the lowest difficulty?

This thought had grown deep in William’s mind!