One day, the elderly-looking transfer student Tanaka Shori, AKA Billy, arrives at the school. He proclaims himself a scientific genius, but he's actually a commander in the enemy organization! He declares that he'll use his own formula to ascertain Twin Angel's secret identities, but...
The first star of the evening, 
twinkling in twilight!
!يا ضوء المساء الأوّل المتلألئ في الشّفق
Der erste am Himmelsfirmament
funkelnde Stern!
¡La primera estrella de la tarde!
¡La primera estrella de la tarde!
La première étoile du crépuscule…
Angel Sapphire !
La prima stella che risplende al crepuscolo...
A primeira estrela da noite,
cintilando o crepúsculo!
Проблеск первой звезды в сумерках!