During their first night sharing a room, Yuzu had her first kiss stolen by her step sister. Since then she can't get Mei off her mind, while Mei herself goes on as if nothing happened. Meanwhile, Mei's Grandfather, the chairman of Aihara Academy, takes Mei back to his mansion. Unable to forget the sad expression on Mei's face when they kissed, Yuzu heads to the mansion to confirm Mei's true feelings, but...?!
Maybe I'm starting to get all 
negative like the people here.
Färbt die Trostlosigkeit dieser Mädels
hier etwa auf mich ab?
Puede que me estén contagiando
su negatividad.
Puede que me estén contagiando
su negatividad.
Faut croire que les mollasses du lycée
déteignent sur moi.
Forse sto diventando
come le ragazze di questa scuola...
Talvez eu esteja começando a ficar
negativa como o pessoal daqui.
Наверное, на меня действует
здешняя негативная энергия.