Reborn for the Apocalypse

Reborn into a global catastrophe of extreme high temperatures, one woman stops her family from wrongly giving away supplies and settles down with them in a high-rise building to safely survive the disaster. Another heroine is reborn on the eve of the apocalypse, decisively dumps her biased and scummy boyfriend, and with a pocket dimension at her disposal, she joins the military, closely following the nation's lead to live a stable life.