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...?!
Any girl would be truly happy to have
 a big sister going to such lengths for her.
Jede jüngere Schwester würde sich über eine
ältere Schwester freuen, die sich so für sie einsetzt.
Cualquier hermanita apreciaría que su
hermana mayor hiciera tanto por ella.
Cualquier hermanita apreciaría que su
hermana mayor hiciera tanto por ella.
Une fille qui a une sœur comme ça,
Se io avessi una sorella maggiore 
che fa così tanto per me,
Qualquer irmã mais nova ficaria feliz de ver
a irmã mais velha lutando assim por ela.
Любая младшая сестра бы обрадовалась,
если бы старшая ради неё так старалась.