I will become the Demon Immortal known to the whole world - Chapter 4: Assault of the Blood Sea

Protagonist travels between different anime worlds to right wrongs and uncover his reason for being along the way.

I closed my eyes and let out a long, shuddering breath. The needle slipped through my numb fingers and clattered onto the rough pavement. Nothingness swirled around me, bringing the first peace I'd felt in my short, miserable life. No one would miss me, and if any did...? Well, there was always someone else to beat or rape. They'd move on quickly.But then...gods? Since when did nothingness have so many gods?Chosen by the goddess of Fate, I'm thrust into a world of magic and wonder alongside nine other heroes. A world where the gods reign supreme, and evil is vanquished before it can spread its blight.Can such a place truly exist? Could life really be worth living?I've heard that the brightest lights cast the longest shadows, but my life has been nothing but darkness. Perhaps this new world will be the chance I need to find the light, to see the other side.

Once upon a time, a boy was referred to as a “War Hero.”

In another world called Aletia, the boy who had saved the Lost Kingdom, conquered their neighbouring countries, and led to the rise of a grand empire decided to throw everything away, returning to the modern era at the cost of his memories.

As three years passed, the boy who was happily enjoying his daily life was once again called back to the other world.

However, what awaited him was the Aletia of 1000 years in the future.

As his past glories became a “myth,” the legend of the youth referred to as the, “Twin Black Hero King,” begins.