The group trains so that everyone can pair with any other team member and use their powerful Unison attacks. But Shirabe is having trouble pairing up with anybody but Kirika, because of her inability to trust others.
It may have to do with the 
ley line observatories.
لعلّ للأمر علاقة بمراصد خطوط لاي
Das könnte etwas mit den
Ley Line-Observatorien zu tun haben.
Debe ser por los observatorios
de las líneas ley.
Debe de ser por los observatorios
de las líneas ley.
Probablement concernant
les lignes de Ley.
Potrebbe trattarsi dell'osservazione
delle linee temporanee.
Talvez seja algo relativo
ao caso das Ley Lines.
Видимо, от обсерваторий лей-линий.