Honkai Impact : The Birth Herrscher of Shadow

[Warning!!] [Warning!!] This story contains depression, tragedy, and so on. [This is the Prequel of Rise Herrscher of Shadow.] __ In a world where human civilization has developed science and technology to be very advanced. A mysterious calamity named "Honkai" suddenly appears. "Honkai" has various forms, from natural disasters, plagues, and to humanoid creatures with white shells who only have thoughts of annihilating mankind. No one knows the origin of Honkai. Some think Honkai are God's punishment. Some also think Honkai are monsters who born from human hearts, because they grow stronger in proportion to the progress of human civilization. But despite that, the human race didn't pay much attention to Honkai. Until at some point a creature called "Herrscher" aappeared.. __ Because of the Third Eruption Honkai in the city of Nagazora that gave birth to the Third Herrscher, Kouro who was an ordinary teenager at the time lost everything. Parents, home, friends, lovers... Everything precious to him was taken away by 'Honkai'. But as the wise man said, "Underneath misfortune there is wisdom to be reaped. " Kouro finally remembered his true identity. A reincarnator. Driven by guilt and madness, he faced the destiny of human civilization towards inevitable destruction. Witness his journey in his quest to change the destiny of mankind. Witness the birth of... The Herrscher of Shadow.