Raden was just an ordinary high schooler until he cracked open a mysterious chest in his warehouse. That one decision bound him to a sinful spirit, forcing him into a contract that now shares his body. Within the shadows of Spectre City, he can transform into a demon, wielding speed and strength far beyond human limits. But that power comes with steep costs and brutal consequences. To Raden, this ability is no gift, it is a lifelong burden. He has no desire for luxury or glory. All he wants is a simple life, a quiet existence hidden away from a world that has turned undeniably cruel...