In the End of the World, Sign in and You Will Be Sent to Shelter

[Apocalypse, shelter, survival, extremely cold era, human nature, system, no rebirth, calmness] Global warming + period of low solar activity + large-scale wildfire outbreaks + abnormal ocean circulation = the arrival of an extremely cold era. On this day, Wang Yiyang was hit by a flying comet. Got a system where you can sign in and redeem shelter facilities. From then on, he thought that he could survive the rest of his life in the last days. I have to take good care of the sisters around me, Even give them a complete home!