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...
"Q.E.D.! The Scientific Genius."
".اكتمل الإثبات! العالِم العبقريّ "
Beweis erbracht! Das Wissenschafts-Genie.
La démonstration du génie.
«Ч.т.д.! Гений науки».