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!
So this is the sixth member of the 
Trinity Seven that he's run into.
Das ist also das sechste Mitglied
der Trinity Seven, dem er begegnet.
Esta es la sexta miembro de las Trinity Seven 
con la que se ha encontrado.
Esta es la sexta miembro de las Trinity 
Seven con la que se ha encontrado.
C’est donc la sixième
des Trinity Seven
Quindi, le Trinity Seven 
che ha incontrato finora sono sei.
Então essa é a sexta integrante 
da Trinity Seven que ele encontra.