HP: The Arcane Thief - Chapter 30: A Letter

The mortal body, metamorphosis, longevity, immortality, and eternal life. These five realms, step by step, reveal themselves in front of you. As a normal person, how can one try step by step to reach and open the door to eternal life?

Between the heaven and the earth lies the mortal body, the mysteries of metamorphosis, freedom of longevity, the power of immortality, and the hope of eternal life. A story filled with endless new magic, a new world of immortal styles, people, demons, gods, fairies, magic, kings and emperors. A world of love and hatred, revenge, and mystical battle, all in “Eternal Life.”

Aku was not the hero destined to save the world, nor the princess destined to be rescued.He was the demon king. Born without a name, without form, without freedom, predestined to die at the hands of the hero from his birth.However, Aku decided to defy fate. He took over the hero's body to find his freedom.It was then that an angel spoke to him, believing he was the hero who had failed to defeat the demon king.The angel told him that countless worlds and countless demon kings existed; those heroes who failed their mission were sent to an academy to amend their mistake.Now Aku will find himself caught up in battles with other demon kings and wars in other worlds while deciding whether to choose the path of good or allow himself to be consumed by darkness.

I will go forward step by step, until one day I surpass you, Dad! !!

Zhao Gang, who has graduated from the World Hunter School, returns to the city. He inspires his own country and surpasses his father who is already at the top of the world.

- Description from Uukanshu

Throughout this current life of mine, I will pay no attention to my past lives, nor will I seek future lives. I wish to live vigorously, to pay back debt of gratitude and fulfill duty to avenge, to defeat valiant heroes from all species, and to proudly laugh at all the Gods and Demons of the Six Path of Reincarnation!

- Description from Novelupdates