He Ruge is obsessed with the love simulation game "Your Exclusive Lover," completely infatuated with the male lead who looks irresistibly sexy in military uniform and whose true form is a white tiger. When the game reaches its finale, He Ruge unexpectedly transforms into a mermaid and travels through time, becoming a legendary koi mermaid known for stunning beauty, enchanting singing, and incredible luck! His landing spot is even more unique—the male lead’s bathtub! * Xi Guican, the Blade of the Federation, a man who could make the entire galaxy tremble with a single step, finds a love game on his terminal that can’t be deleted during his recovery. The game's plot revisits his deeply buried past, where he relives his days as Experiment Subject No. 20, helpless and bullied. The only variable— is his exclusive lover. A lover who brings light and leads him out of darkness.