"1945" is a historical manga set during the final months of World War II, focusing on the lives of individuals caught in the turmoil of the conflict. The narrative centers on a young Japanese soldier, Hiroshi Tanaka, who is stationed in the Philippines as part of the Imperial Japanese Army. Hiroshi, initially driven by a sense of duty and patriotism, gradually becomes disillusioned as he witnesses the harsh realities of war, including the suffering of civilians, the brutality of combat, and the moral dilemmas faced by soldiers on both sides.

The story intertwines Hiroshi's personal journey with the broader historical events of the war. As the Allied forces advance, Hiroshi and his unit are forced to retreat through the dense jungles of the Philippines, facing starvation, disease, and constant enemy attacks. Along the way, Hiroshi encounters a diverse cast of characters, including fellow soldiers, local villagers, and American troops, each with their own perspectives and struggles. These interactions highlight the human cost of war and the complexities of loyalty, survival, and morality.

A significant subplot involves Hiroshi's relationship with a Filipino girl, Maria, whose village is caught in the crossfire of the conflict. Their bond, fraught with tension and mistrust due to the war, evolves as they rely on each other for survival. Maria's character provides a lens through which the impact of the war on civilians is explored, emphasizing themes of resilience and the search for humanity amidst chaos.

The manga also delves into the psychological toll of war on soldiers, depicting Hiroshi's internal conflict as he grapples with guilt, fear, and the loss of comrades. Flashbacks to his life before the war contrast his youthful idealism with the grim reality he faces, underscoring the transformative and often devastating effects of conflict.

As the war nears its end, Hiroshi's journey culminates in a poignant exploration of surrender, reconciliation, and the hope for a future beyond the battlefield. The narrative does not shy away from the harsh truths of war, presenting a sobering yet deeply human portrayal of one of history's most tumultuous periods. Through its detailed storytelling and well-developed characters, "1945" offers a compelling and thought-provoking perspective on the enduring impact of World War II.