Valkyrie Smash - Chapter 369: Crush.

He lived from BC to the Middle Ages, from the Renaissance to the Industrial Revolution, and from Cyberpunk to the Interstellar Age. He has been a king and a prophet, a knight and a nobleman, a versatile artist, a genius inventor…
This is a four-thousand-year human epic——
“To us four thousand years from now:
“Is the world at peace? Is famine extinct? Can people touch the stars? How long is the human lifespan? How far is the boundary of the earth? Human…do you remember us?”
——Excavated from Earth Age Tenth Century BC, Solomon Prayer Book.

- Description from novelbuddy

After being transported to this world, Nara Kazuki discovered that as long as he grinded enough proficiency, his jutsu could level up.And so, he began walking a very... peculiar ninja path.

Official:I had thought this bleak future would continue on for me every day, but…[You can copy-paste the effect of an item onto other targets.][Target: No limitation]My life changed all of a sudden ever since that day.Previous Blurb:The road before me was dark and my future was bleak.I thought my days would continue to be like this.But on that day…[You can copy an item’s options to another target.][Target: Unlimited]My life changed dramatically.

Originally, the question Tang Xian was thinking about was whether he should be a hero for a second among this group of destructive bosses, or continue to pretend to be a boss.

Later he found out that if you pretend to be fake, it becomes real.

- Description from novelbuddy