Guri finally meets Seiji's younger sister, Akua and is surprised by her rather cold attitude towards her big brother. The cupid decides to learn more about what changed this once loving sister, and Yuzu is right there to help (or make things worse...). But while the girls are getting acquainted the demon Stolas appears and a panick ensues! The strangely psychotic penguin seems to have a special affinity for Akua and sends her running. It's up to her big brother Seiji to save her like he used to.
Well, actually, it might be 
because we lost the notebook.
Bueno, tal vez sea
porque perdimos el cuaderno.
Bueno, tal vez sea
porque perdimos el cuaderno.
Rien, c’est peut-être dû
à la destruction du cahier.
Beh, ecco, potrebbe essere dovuto
al fatto che abbiamo perso il quaderno.
Bom, acho que é porque 
nós perdemos o caderno.
Вообще-то это наверняка из-за того, 
что у нас больше нет Тетради.