In 1923, amidst the turmoil of post-war Japan, a group of elite vampire hunters known as Code Zero is tasked with protecting humanity from the looming threat of bloodthirsty creatures of the night. Led by the stoic Major Yoshinobu Maeda, the team must navigate a delicate balance between their duty to eradicate vampires and the humanity that still exists within these supernatural beings. As tensions rise and mysterious events unfold, Code Zero faces challenges that test their loyalty, resolve, and understanding of the ever-evolving world around them. With each new encounter, secrets are unveiled, alliances are tested, and the line between friend and foe becomes increasingly blurred. MARS RED is a gripping tale of duty, honor, and sacrifice set against a backdrop of political intrigue and supernatural threats. As the members of Code Zero grapple with their own inner demons and the complexities of their mission, they must confront the darkness that lurks within their own hearts while striving to protect the fragile peace of a world on the brink of chaos.