This is an alternate history WW2 book
Sergeant Major (Y/N)(L/N), known as the Hero of Bloody Nose Ridge, finds himself in a unique position in 1945, stationed in Busan, South Korea with the 1st Marines. As they train for the daunting invasion of Tsushima Island, a gesture of gratitude from the South Korean government takes an unexpected turn. K-pop idols, including Nayeon from Twice, are sent to entertain the troops, with (Y/N) tasked to ensure their well-being. Amidst the performances, a bond forms between Nayeon and (Y/N), but their budding romance is cut short as (Y/N) is deployed for the perilous invasion.
As the invasion of Tsushima Island looms closer, the tension among the 1st Marines is palpable. (Y/N), with his unwavering determination and leadership, instills a sense of courage in his fellow soldiers. Nayeon, torn between her duties as an entertainer and her growing feelings for (Y/N), finds herself consumed by worry for his safety.
As the marines storm the shores of Tsushima, facing relentless resistance from the Japanese forces, (Y/N)'s bravery shines through. The ferocity of the battle matches the harrowing tales Nayeon had heard, but she clings to hope, her thoughts never straying far from the courageous Sergeant Major.
Through the chaos of warfare, (Y/N)'s thoughts often drift to Nayeon, her warmth and kindness a beacon of light in the darkness of war. Despite the odds stacked against them, the connection they share serves as a source of strength for both in the face of adversity.
Will (Y/N)'s valor be enough to see him safely through the horrors of war and back to the waiting arms of Nayeon, or will the brutal reality of combat tear them apart forever?