[Apocalypse + natural disasters + stockpiling supplies + two strong leads + brother and sister]
Natural disasters strike, and human civilization is on the verge of collapse.
In this cruel Apocalypse, the two support each other and carve out a new path of hope.
P.S. The female lead is a normal college student, so of course certain things affect her and make her feel compassion. When there's no immediate danger, she'll help if she can. I can't write the kind of character who ruthlessly kills everyone without a second thought.
