I Have a Shelter System, So Being a Little Overpowered Is Only Natural

【No Female Lead + Shelter + Upgrades + Farming and Management + Ruthless + Invincible】 What the heck? He wakes up to find the entire world struck by an apocalyptic disaster! And his roommate has turned into a terrifying corpse ghoul! After Zhou Qi narrowly kills his roommate, who has mutated into a corpse ghoul, he unexpectedly activates the Shelter System. From then on, he slowly builds an invincible shelter in the apocalypse and lives in comfort and style... 【Ding! Host has killed their first mutated creature and successfully activated the Shelter System!】 【Ding! Congratulations, Host! You killed a Level 1 Elite Corpse Ghoul and received a Basic Electricity Blueprint!】 【Ding! Congratulations, Host! You killed a Level 2 Mutant Cockroach and received a Basic Water Purification Blueprint!】 While others are struggling to survive in the apocalypse, fighting to the death over a piece of bread, Zhou Qi is lounging in a luxurious room in his shelter, enjoying fine wine and steak and living like an emperor. While others risk their lives fighting powerful mutant beasts to obtain crystal cores and grow stronger, Zhou Qi looks at the mountain of crystal cores piled up in his shelter, fretting over which ability to upgrade first.