Apocalypse: The Mercenary Brothers Fiercely Compete for Their Little Sister

Li Tong is an eighteen-year-old orphan raised by her four older brothers, all of whom work as elite mercenaries. Despite her frail constitution, she lives in luxury, spoiled endlessly by the men who found her in the forest and raised her as their own. For a month, Li Tong has suffered recurring nightmares of an impending apocalypse involving natural disasters, eternal darkness, and an insect invasion, in which she and her brothers all perish. One night, a mechanical voice identifies itself as System 09 and reveals that her dreams are prophetic. The system grants her three cheats: an interface with unlimited supplies, a personal small world accessible for twelve hours a day, and a pill that grants absolute healing and purification abilities. After consuming the pill, Li Tong undergoes a painful transformation that perfects her physique and cures her chronic frailty. With only three days remaining before the predicted disasters begin, she urgently contacts her brothers, who are currently on a dangerous mission. Their calls are cut short by explosions, deepening her anxiety.

Li Tong’s brothers return home covered in wounds, having narrowly survived their mission. She reveals her knowledge of the coming apocalypse and the existence of her system. The brothers, trusting her implicitly despite the absurdity of her claims, immediately agree to her plan. Li Tong uses her system to teleport their entire villa into storage and summons a vehicle to transport them to a fortified apartment on the thirtieth floor of a high-rise complex. There, she reinforces the apartment with bulletproof glass and aluminum alloy doors, sealing all pipes to prevent flooding. She then binds all four brothers to her system by interlocking fingers, allowing them access to the small world. Inside this sanctuary, she administers healing pills to each brother, erasing their scars and restoring their health to peak condition. The group settles into the small world to wait out the initial storm, emerging only when necessary.

As the torrential rains and hurricane-force winds devastate the city, floodwaters rise rapidly, submerging lower floors and forcing residents into desperate situations. Neighbors knock on Li Tong’s door, begging for shelter and supplies, but the brothers refuse to let anyone in. Tensions rise within the group as the brothers’ protective instincts toward Li Tong begin to manifest as possessive jealousy. A violent confrontation erupts between two brothers over Li Tong’s attention, leading to physical injury. Distraught by the conflict, Li Tong threatens suicide with a system weapon, causing the brothers to collapse in terror and remorse. She uses her healing ability to save them, but the emotional strain leaves her unconscious for three days. Upon waking, the brothers are consumed by guilt, vowing to share her affection rather than fight over her exclusively.

The brothers encounter former guildmates outside who request to join their team for survival. Recognizing the threat posed by a larger group and the potential risk to Li Tong, the brothers agree to a temporary alliance while secretly planning to distance themselves. Meanwhile, Li Tong’s prophetic knowledge guides their preparations for the subsequent disasters, including extreme cold, heat, and insect swarms. The story follows their isolation in the fortified apartment and the small world, highlighting the brothers’ obsessive devotion and Li Tong’s role as the central figure whose supernatural abilities ensure their survival against the collapsing world.