Back to the Calamity, Hoarding Supplies with My Pocket Dimension

(Rebirth + natural disasters + pocket dimension + stockpiling supplies + no goody-two-shoes + romance) (Extreme heat + torrential rain + acid rain + extreme cold + mutated creatures + endless nights) Natural disasters ravaged the apocalypse, bringing extreme cold and heat. In her previous life, Shen Feier struggled to survive for five years, dutifully supporting her best friend's family. She never expected that, over a few pieces of clothing, her scumbag boyfriend and best friend would hand her over to others to be used as food, and she'd be boiled alive. Reborn, this time she'll be a little hoarder, build a safe house, keep her head down while she enjoys her meals, and quietly grow stronger! She'll farm and raise sheep in her pocket dimension, and whenever there's nothing to do, kill a few people to put her mind at ease. While frantically stockpiling supplies, she'll also teach her scumbag boyfriend and backstabbing friend a lesson. She'll get revenge on anyone who wronged her, and take every chance she gets to trip them up. Just wait and see how they beg on their knees, and how they meet their end in the apocalypse. She just never expected that the person living across the hall this time would be the idol she'd loved for years! Life is hard, Feier sighs! Even with a handsome face right in front of her, she doesn't want to become a lovesick fool! Surely it can't hurt to secretly help her idol survive! But why is he looking at her more and more suggestively?! Aaaaaah! I just want to be a little hoarder! Is he trying to seduce me so he can eat my food?! (The heroine isn't a goody-two-shoes. She smiles on the surface but plays the pig to eat the tiger, is ruthless at heart, and likes her idol without becoming a lovesick fool. Her own life comes first! In front of her idol, she pretends to be a delicate, innocent flower!)