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!
Why did you leave us to commit such a taboo?
Warum hast du uns verlassen,
nur um so ein Tabu zu begehen?
¿Por qué cometerías un tabú como ese?
¿Por qué cometerías un tabú como ese?
Pourquoi nous as-tu quittées
pour braver l’interdit ?
Perché stai facendo tutto questo?!
Por que você nos deixou 
para tentar tal tabu?