The male protagonist is a killer who has no feelings. Once the assassination mission failed, the team members were betrayed by the organization together with him. When the male protagonist was dying, he recalled that the male protagonist had lived in the darkness since childhood. He lived in the darkness all his life and never saw the light until his death. He died before saying goodbye to a girl he liked. Then suddenly, with regret, a bright light took over a man's body. A man from an ordinary family background was transformed from a killer into an ordinary person, making this man in the darkness People bring light, hope and warmth. They have never been cared for by their parents. Under the plot, they gradually get rid of their former self. A killer who has been in darkness since childhood and was trained to travel to the world of Conan will change the direction of the plot and the entanglement of hope and love. He is in danger and survives. When he meets the heroine from the beginning, he doesn't like it until the end and goes through a lot. Will he choose to respect his own ideas or not affect the development of the plot? Will he choose or forgive his past self? There is also the farewell and reunion together...
This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.