Two homeowners-- to Lisa because soaring prices of New York's housing market are purely absurd that she can't pay the rent alone even with a waitressing job. Then to Jennie, because she's a trying-hard daughter that instead of asking for financial support from her parents, insisted on doing it on her own so now she can't afford to have a place of her own. They do it begrudgingly, an introverted grumpy working student with a rich brat girl, it's not really the most ideal duo. Jennie has her moments of brattiness and Lisa groans her irritation at the girl, but they could tolerate each other. Everything's okay. It's just one day, some 13-year-old knocked on their door and claimed to be their kid from the future. alternatively: the roommates (more like housemates) AU but with a kid.