Three days after Yumi was rejected by Touko at the Christmas party, a letter arrives for her from Sachiko. It invites her to a New Year's gathering at the Ogasawara residence, which is exclusively for women this year. As the new year begins, the three Rosa sisters gather at the Ogasawara residence! They spend their time joyfully playing Hyakunin Isshu and human Sugoroku, but shocking truths about Sachiko come to light...!? Yumi and Sachiko's second New Year together is filled with the promise of turmoil!