Help! I Fell in A Well and Now I'm in an Alternate Universe!

[Warning: SLOW BURN ROMANCE] Because of her smarts, plain, nerdy looks, and timid personality, Olivia Twyne was often bullied at school. However, after what Olivia thought was just a regular bullying incident suddenly took a more violent turn, Olivia was transported to another universe, The Opposite World. Here, everything is the opposite of the realm where she originated. In the Opposite World, she meets the alternate universe version of herself, Oliver Twyne. He was her complete opposite: Popular, handsome, and a jerk of a jock. And her worst nightmare, a bully. Due to their contrasting qualities, it goes without saying that they hate each other. Olivia struggles to navigate this alternate universe and battle her hatred for Oliver, but she must find out the mysteries that brought her here and find a way back to her own universe.