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...?!
Why do you look sad around me, then?
Warum siehst du in meiner Gegenwart
dann so traurig aus?
Entonces, ¿por qué pones
esa cara tan triste?
Entonces, ¿por qué pones
esa cara tan triste?
Pourquoi tu m’as montré
cet air douloureux, alors ?
E allora perché mi hai mostrato 
quella faccia afflitta?
Se é assim, por que me olha
com essa cara triste?
Тогда почему ты так печально
на меня смотрела?