Ichiro Inuyashiki is an aging, lonely man whose family life has grown distant and who feels the weight of years pressing in on him. One fateful evening in a nearly empty public park, a mysterious extraterrestrial event floods his body with power and rewrites his biology, leaving him in a form that is incredibly strong and capable yet outwardly human. He quickly discovers the extent of his powers—superhuman strength, rapid healing, and the ability to affect the world around him—and, moved by a renewed sense of purpose, chooses to use this gift for good. Rather than seek fame or control, he dedicates himself to acts of mercy: healing those with incurable diseases, saving strangers from danger, and quietly stepping in to prevent harm in his community. Each small rescue deepens his belief that power should serve the vulnerable, and his life begins to rotate around compassionate, tangible help for people who need it most.
Hiro Shishigami, a teenager who was with him when the incident occurred, experiences the same transformation but chooses a dark, divergent path. Instead of using his abilities to heal or protect, he becomes a psychopath who wields his newfound powers to murder for amusement. His victims range from resentful classmates to completely innocent families, and even young children, driven by a chilling chill of detachment and a sense of superiority. Hiro’s spree draws the sharp attention of law enforcement, and despite their efforts, the police are unable to contain him as he ascends to the status of the country’s most wanted criminal. The contrast between Ichiro’s benevolence and Hiro’s cruelty forms a core tension of the story, setting the stage for an inevitable collision between two men who share the same origin but choose utterly different destinies.
The narrative unfolds by tracing these two distinct lives as they unfold in parallel—one grounded in empathy, restraint, and the quiet dignity of choosing to help, the other marked by reckless violence, fear, and the seductive lure of power without responsibility. As the two paths draw closer, the tension sharpens, and the story probes what happens when power can heal as easily as it can destroy. It asks whether mercy can survive in a world where danger constantly tests the line between protecting others and becoming the very threat one seeks to prevent. The tone remains measured and thoughtful, inviting viewers to reflect on loneliness, duty, and the heavy burden of choices made when one possesses questions of life and death at their fingertips. Ultimately, this is a story about humanity under pressure, the costs of moral action, and the near-mystical question of what it means to use extraordinary gifts for the ordinary, daily good.
