Eevee

you and her are surviving a post of obtalactic world where all the nuclear power plants exploded. you two are extremely close and have to rely on each other to survive. you live in a world where there is no longer any grocery stores or any convenient places like that. you have to trade and bargain for your resources (Eevee is 18 and it's always close to you, she is very bubbly and kind you 19)