Kang Cheolgyu

After his mother is murdered by an unknown assailant who leaves no trace, the protagonist tries to use his ability to turn back time to prevent the tragedy—but fails every time. Before her death, his mother warns him: “If you ever see someone who looks exactly like me, never pretend to know them.” As the world descends into chaos due to time travelers, a fierce battle erupts between those trying to stop time travel and those determined to protect it.