KARINAxFEMREADER Plot. Lee Y/N, a fashionable, spontaneous and fun-loving city girl, transfers to a new neighborhood and high school after her mother's remarriage to another man. ... As it turns out, Yoo Jimin known as Karina happens to be Y/n's new stepsister and Y/n finds herself having to share a bedroom with a girl she absolutely can't stand. :This story is inspired by citrus anime gxg.