Sachi notices something going on between Erika and Nagi and decides to try to get to the bottom of it. Both she and Nagi are on the verge of a big decision.
trying to make up for the fifteen 
years she never got to spend with her?
التعويض عن السنوات الخمسة عشر
 التي لم تقضها رفقتها؟
die verpassten 15 Jahre mit
ihrer Schwester nachholen will?
de rattraper
les quinze dernières années ?
sta cercando di recuperare i 15 anni
che non ha passato con lei?
está tentando recuperar os quinze
anos que nunca pode passar com ela?
компенсировать те пятнадцать лет,
что они жили порознь?