Bitter Cold in the Apocalypse, I Open a Hotel at School

System + multiple female leads + unlimited supplies. Zhang Biao works as a security guard at a private middle school to support his girlfriend while she studies for graduate school exams. In the end, all he gets is, “My girlfriend got married, but I wasn’t the groom.” See how this big fool Biao takes the collapsed world by storm and builds an apocalypse base at the school.