One day a new girl came at the Sakamaki mansion. She was Kiki Komori,Yui's 5 year old cute sister who is obsesses with unicorns and glitter. She came before Yui and shook the whole family,making the brothers love her. But when Yui came,Kiki's personality totally changed. What will happen?? Read to find out. P.S: i wrote this when I was 12/13 so pls forgive me if it's cringe or seems childish ㅠㅠ