Using the "memory strain" as a clue, it runs through science fiction settings such as special forces, women, biological weapons, genetic modification, and consciousness control, which is a metaphor for the erosion and alienation of human nature by technology.
Humanistic theme: The use of "memory strain" symbolizes the clone's pursuit of self-identity, which not only points to Maeda Yuki's divided and sealed past, but also serves as a metaphor for the K-series' awakening of consciousness from weapons to humans.
