21st century Goguryeo - Chapter 6

Ryu Han-bin, the main character who fell into a new world after being chosen as a ‘suitable person’.

Because of the error in the guidelines, the training is repeated endlessly…

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

David crossed over to a new planet after getting killed on his previous one. This new planet is dangerous and filled with supernatural creatures like monsters and demons. Without enough power to protect yourself, you could get killed at any time.Unfortunately, David only has average talent and struggles to progress on this new planet. After 3 years of trying to become more powerful, he is eventually expelled from his warrior school due to his average talent.Faced with this situation, David doesn't know what to do. He is unsure if he will be able to survive on this planet or protect his family. For 3 years, he has not received any kind of help or advantage that would make his life easier.Ultimately, David almost loses hope and accepts his fate as an average person. However, just when he has given up, he suddenly receives a cheat or “Golden finger” that gives him the chance to become as powerful as the other geniuses on the planet.Will he get the chance to become powerful? On this new planet, he can be killed at any time by supernatural creatures. To learn more about David's journey, continue reading.

Tong, a sinner who was suffering endless torment in hell because of his mistake he had done in his previous life, was giving other chance to redeem himself by the devil.