MTL - One Piece: Wudang Baiye, Deputy Captain of the Straw Hats - Chapter 390

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 world underwent a mutation that year. The game world appeared in reality and various disasters started to ravage the world.

To resist all of this, everyone had to plan for their job choice, manically level up, and strive to become stronger.

There were mages, warriors, knights, and summoners—over 100 different kinds of jobs. This was a job that a person would be stuck with his entire life. Thus, everyone chose cautiously. Out of this dazzling array of jobs, Moses picked Knight—which had the most average ability value—to be his job.

At the same time, he also awakened the Hundredfold Increase System.

“”Ding! Detected that the host learned Shielding. The skill has become Absolute Defense after the hundredfold increase!””

“”Ding! Detected that the host learned Defensive Domain. The skill has become No Damage Domain after the hundredfold increase!””

At the same time, Moses also discovered that his job could evolve infinitely!

“”Ding! Detected that the host’s Knight job has met the conditions for a hundredfold increase. The job has become Great Knight… Paladin… Impregnable Fortress!”

With a father as strong as the highest heavens themselves, Gravis wasn't required to step into the cold and ruthless world of cultivation. But when Heaven used him in a scheme to get back at his father, Gravis realized that he needed strength to gain true freedom.

As long as he remained his weak self, he would always remain beneath Heaven’s oppression. Only true power brings true freedom. To gain strength, Gravis ventured into the lower worlds to start his cultivation under true life and death tempering.

Only a strong will, which had been forged in striving for every resource available, would allow him to reach the peak. Heaven’s strongest weapon was Lightning of Divine Punishment, and only if he made this weapon his, would he have a chance.

So, to overthrow Heaven,

Lightning Is the Only Way!

Yet, the path to power is painful.

Not everyone reaches the peak.

But Gravis will!

No matter how much pain he feels along the way!

In a tyrannical world, what is evil? What is benevolence? All living creatures are brutal. Passing through the heaven road to find one’s purpose in life. Struggles to be stronger is not an easy path. The whole journey thistles and thorns, one blade chops open a path, I alone will be supreme!