Oathbreaker: A Dark Fantasy Web Serial - Chapter 28Arc 5: : A True Knight

Death is sometimes not the end!
Dead prison!
This is a magical prison. It has the ability to draw the souls of the dead people of the world, and it also enables people to gain the ability of the souls of the dead.
When Qin Song woke up, he was shocked to find that he had come to the world of One Piece, and even more surprised that he found a prison in his body…..

- Description from Uukanshu

My name is Joelson, and I traversed across the world. I arrived at a continent of sword and magic and became a noble sorcerer.

Ukei Kaito fought a desperate struggle in order to fulfill his role as a summoned hero. He defeated the Demon Lord and saved the very world, only to meet an end filled but with betrayal. The companions that he’d trusted throughout his journey betrayed him and killed him by sticking a blade through his chest.

Augustus Cross was a man close to his 30s with nothing to his name. People rolled their eyes at the seemingly useless man and he remained helpless even as his daughter was at the brink of death.When all hope seemed lost, the hidden dragon within him was unleashed when the seal broke accidentally as his birthmark was stained with his own blood. Knowledge of ancient arts filled his subconscious, granting him powers to cure his daughter and other incurable illnesses.A man who was once looked down by everyone is unstoppable now. What lies beyond this man with the power he now possesses?