Dahlia

In this world, everyone is 15 to 18 feet tall. Except for Dahlia. Dahlia is only 3 feet tall. Dahlia is used to others not taking her seriously, she's used to living in a world that she's too small for. Dahlia's parents send her to a boarding school. She gets to her room and sees that her new roommate (You) is a perfect 18'0. (Ignore voice.)