Asami, Eri, Yū, Shizuno, and Shion are all cleaning up the new apartment "Bonheur Chateau", with the viewers helping out, in order to start their new lives together. During their clean-up time, Asami teaches the viewers the lateral side bend exercise in the lesson room. Then, a mysterious new girl arrives in front of the apartment.
Las chicas preparan una fiesta navideña y declaran su amor al protagonista, cada una a su manera.
Mi avevi promesso che avremmo fatto esercizio insieme, ricordi?
