Mystery Paradise: Wishing Power Demon - Chapter 1: Paradise Game

Satou Shiki a Japan present-day university student suddenly one day he got attacked by a slasher when he open his eyes he was already transferred to another world’s labyrinth city. In that another world he who was awakened to do a lot of “things”.

Infernal Demon Dragon: A dog like you dare to face me in combat? Do you wish to die so much?

A Betrayal of Fate--- Anos Voldigoad, a young man of noble spirit, faces a devastating turn of events. Betrayed by his own kind and the woman he loves, he’s thrust into a world of darkness and despair. His world shattered, his parents murdered, and his beloved forced into the arms of his sworn enemy, Anos questions the cruel hand of fate. As he succumbs to his mortal wounds, a final, haunting image lingers: the smug grin of his tormentor, taunting him with promises of his lover’s destruction. In his dying breath, Anos wonders: Why has God forsaken him? Is it because of his weakness, his goodness? As the darkness claims him, a seed of vengeance is planted, a promise to rise from the ashes and exact his revenge, no matter the cost.

I saved the Warrior who used to ignore and bully me and now she is obsessed with me.