I Have a Two-Way Door in the Apocalypse

Female protagonist + group portrait + not abusing women + having CP Starting in 2030, humans will finally bear the consequences for the harm they have caused to Mother Earth. In 2024, Xiaorili took the lead in discharging nuclear wastewater, and other countries followed Xiaorili one after another. This also led to large areas of the ocean being polluted by nuclear wastewater. At the beginning, people also made observations, and only saw large-scale deaths of marine animals. At first, humans did not take it seriously. First, animals and plants in the sea began to mutate, and slowly, land animals and plants also began to mutate quietly. Finally, humans finally embarked on the path of mutation. Ice Age 55 This world is called the Little Ice Season, because the earth is quickly frozen by the freezing factor. Humans and land in this world mutate. Humans begin to awaken at the age of 20. If a companion beast is not born after reaching the age of 22, then this person is an ordinary person. Ordinary people can only survive in the safe city. There are two types of companion beasts: attack and auxiliary. This world is also because of these supernatural beings who lead ordinary people to struggle to survive.