After the end of the show Korra and Asami get married and have two kids. I'm going with some sort of spirit helped them conceive them but not going into details ill let you come up with the ideas. I started out wanting it to be focused on korra and asami but that changed. then it was going to follow both the children...
She likes being alone while he loves being the center of attention. She'd rather stay at home, reading books while he'd be in the crowd, playing for his band. No one cares about her existence while he is every girl's dream guy. Two opposite people bound to meet each other. One's a smart quiet student, the other's a he...