All You Need Is Kill is a powerful sci-fi military manga centered on time loops, alien invasions, and the psychological cost of endless war, telling the story of Keiji Kiriya, an inexperienced soldier forced into a brutal battlefield against the Mimics who discovers after his first death that he is trapped reliving the same day repeatedly, allowing him to refine his combat skills, tactical thinking, and emotional resilience with each cycle as he teams up with the legendary warrior Rita Vrataski, whose own mysterious connection to the loop pushes the narrative toward deeper themes of sacrifice, destiny, and human will, combining fast-paced mech action with dark philosophical reflections that make the story intense, emotional, and unforgettable, a critically acclaimed work that later inspired the Hollywood adaptation Edge of Tomorrow and remains a benchmark for time-loop science fiction manga, also known as All You Need Is Kill manga, All You Need Is Kill light novel, オール・ユー・ニード・イズ・キル, Ōru Yū Nīdo Izu Kiru, All You Need Is Kill Rita, All You Need Is Kill time loop manga, and manga like Edge of Tomorrow.