6 years ago when Mei left yuzu and married to udagawa to inherit the aihara academy, she miss yuzu after yuzu left,she cry everyday and always blame herself to being weak. Yuzu decided to come back after mei left her 6 years ago,she was successful and beautiful women but she had a secret that no one knew. What that yuzu's secret?that can be a chance to make a two sister/lover be together again?