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...
Sulfur is S. Uranium is U.
!‫رمز الكبريت هو S. رمز اليرانيوم هو U
S für Schwefel! U für Uranium!
Sulfuro es S. Uranio es U.
Sulfuro es S. Uranio es U.
Soufre, S, uranium, U,
S è il simbolo dello zolfo, U quello dell'uranio,
Mo è il molibdeno, Re è il renio!
Enxofre é S, urânio é U.
Сера — S. Уран — U.