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...
But don't forget,
،لكن لا تنسي
Vergiss nur nicht,
No lo olvides.
No lo olvides.
Ne nous oublie pas.
Vedi di non dimenticarlo.
Mas não esqueça
Не забывай,