Nana has shown very high respects and love for her sister, calling her "Ane-ue". They both excel in sports and get along quite well together, though sometimes Nana would get a little upset with her for her airheaded personality. Nana also shows respect for her when she scolds Momo for sleeping in Rito's bed, saying that Rito is Lala's fiancé, despite her annoyed feelings towards him.