My SSS-Class Apocalypse Fortress

Summer Lin, reborn before the apocalypse, gives a flawed space bracelet to her greedy cousin, Rae Shaw. She activates the SSS-Class Apocalypse Mobile Fortress with Infinite Space and Absolute Defense System, hoarding supplies and enjoying a high-quality life. Meanwhile, Rae Shaw suffers a broken leg, disfigurement, and insectoid mutation, becoming a low-level slave. Their fates reverse in apocalyptic revenge and survival.