In a world where darkness and redemption collide, Liam, once a fearsome Demon King, is given a second chance at life by a powerful deity. Reborn as the noble professor Allen Raphaelis, he must now perform acts of good, despite his villainous nature. Liam hides his immense power while guiding a new generation of heroes to protect the world he promised to protect. Struggling between his dark desires and the path of redemption, he finds himself in the body of a minor villain destined to die. Hoping his death will set the plot in motion, returning him to the place he belongs, he expects his son, Adrian, to rise as a hero savior. However, Adrian insists on keeping him safe, saying, "Father, those weak monsters are not worthy of your time. Leave it to me." Meanwhile, his daughter Isabella fiercely protects him from others, declaring, "Daddy! Stay away from that foxy bastard!" Despite his wish to escape fate, Liam resolves all necessary problems, misunderstood as a dark hero burdened with eliminating evil. His seemingly cruel demeanor hides a deep compassion, drawing readers into his inner turmoil as he reluctantly mentors a class of troubled children.