The girls are running in their exercise outfits, with the boobs swaying to and fro. Arata's heart races. Everyone's having great time, and then a ghost appears in the library. Arata and the gang go to check it out, and are forcefully transported to the "Eternal Library". There they find the lost Trinity Seven!
Yui-san's Magus mode, which no one 
in the school has seen before!
Yui-sans Magus Mode,
den niemand zuvor gesehen hat.
¡Nadie en la academia ha podido ver
¡Nadie en la academia ha podido ver
C’est le mode Magus de Yui,
Nessuno in tutta la scuola l'ha mai vista!
Yui-san in Magus Mode!
Nunca ninguém da escola viu isso antes.